Bug 1999318 [wpt PR 55960] - [gap-decorations] Rename outset properties to inset, a=testonly

Automatic update from web-platform-tests
[gap-decorations] Rename `outset` properties to `inset`

Per recent resolutions to the spec, rule `outset` properties are going
to be named with `inset` instead. Although this requires some
changes in behavior, this CL only renames the relevant properties (and
their shorthands). A follow up CL will rename any test files referring
to "outset" and a follow up CL to that will implement the change in
behavior along with the changes in tests.

w3c/csswg-drafts#12848
w3c/csswg-drafts#12603

The links in some comments have been modified too to point to their new
sections in the spec, although they won't work right now since the PR to
change the spec is still under review
w3c/csswg-drafts#13024.

Bug: 357648037, 440054556
Change-Id: I81414a8dc7ee9974e90dbae38f46ee85d76a6251
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7127743
Commit-Queue: Javier Contreras <javierconmicrosoft.com>
Reviewed-by: Alison Maher <almahermicrosoft.com>
Cr-Commit-Position: refs/heads/main{#1542664}

--

wpt-commits: b309d20b304af67e4c7e38c5ebd220a47347edb9
wpt-pr: 55960

UltraBlame original commit: 4fa50156d3f62d236b76cd3539c506796445628e

Author: marco-c

testing/web-platform/tests/css/css-gaps/animation/column-rule-outset-interpolation.html

@@ -26,7 +26,7 @@
 -
 rule
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-outset
+inset
 properties
 interpolation
 <
@@ -164,7 +164,7 @@
 -
 start
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-outset
+inset
 :
 20px
 ;
@@ -176,7 +176,7 @@
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 end
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-outset
+inset
 :
 20px
 ;
@@ -188,7 +188,7 @@
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-outset
+inset
 :
 20px
 ;
@@ -200,7 +200,7 @@
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-outset
+inset
 :
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 ;
@@ -250,7 +250,7 @@
 -
 start
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-outset
+inset
 :
 5px
 ;
@@ -262,7 +262,7 @@
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-outset
+inset
 :
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@@ -274,7 +274,7 @@
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-outset
+inset
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@@ -286,7 +286,7 @@
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+inset
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@@ -319,7 +319,7 @@
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-outset
+inset
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@@ -417,7 +417,7 @@
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+inset
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@@ -515,7 +515,7 @@
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+inset
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@@ -613,7 +613,7 @@
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@@ -711,7 +711,7 @@
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@@ -820,7 +820,7 @@
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@@ -929,7 +929,7 @@
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@@ -1043,7 +1043,7 @@
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@@ -1157,7 +1157,7 @@
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@@ -1257,7 +1257,7 @@
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@@ -1357,7 +1357,7 @@
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@@ -1457,7 +1457,7 @@
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@@ -1557,7 +1557,7 @@
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@@ -1658,7 +1658,7 @@
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@@ -1759,7 +1759,7 @@
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@@ -1866,7 +1866,7 @@
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+inset
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@@ -1973,7 +1973,7 @@
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@@ -2012,7 +2012,7 @@
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+inset
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@@ -2091,7 +2091,7 @@
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@@ -2130,7 +2130,7 @@
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@@ -2209,7 +2209,7 @@
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@@ -2248,7 +2248,7 @@
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@@ -2327,7 +2327,7 @@
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@@ -2366,7 +2366,7 @@
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@@ -2445,7 +2445,7 @@
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@@ -2586,7 +2586,7 @@
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@@ -2727,7 +2727,7 @@
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@@ -2868,7 +2868,7 @@
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@@ -3009,7 +3009,7 @@
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@@ -3142,7 +3142,7 @@
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@@ -3275,7 +3275,7 @@
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@@ -3408,7 +3408,7 @@
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