Update the strings for out of sync Key Storage.

[pixlwave]

This PR is an initial part of #3399 to get the strings in sync with everything done for element-hq/element-meta#2590. I've tweaked the banner a bit too to match the Figma, preparing it for the secondary button to be added.

Unfortunately it looks like updated flows will require somewhat of a re-write so this will be handled separately, likely after the next RC.

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against f5ccb2e

[manuroe]

Thanks. It looks great to me.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 3 lines in your changes missing coverage. Please review.

Project coverage is 77.87%. Comparing base (6f15826) to head (f5ccb2e).
Report is 1 commits behind head on develop.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...creen/SecureBackupRecoveryKeyScreenViewModel.swift	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3468   +/-   ##
========================================
  Coverage    77.86%   77.87%           
========================================
  Files          744      744           
  Lines        61401    61416   +15     
========================================
+ Hits         47809    47825   +16     
+ Misses       13592    13591    -1     

Flag	Coverage Δ
unittests	69.51% <90.90%> (-0.02%)	⬇️

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