Bug(expr): Construction of a path by parts logic for uri isn't consistent

[mwiebe]

Describe the bug

Construction of the path type by parts (from a list) should use the is_uri function instead of inventing its own logic.

Expected Behaviour

We should have unit tests covering this, and

openjd-rs/crates/openjd-expr/src/functions/misc.rs

Line 148 in deb6d40

} else if parts[0].contains("://") {

shouldn't use the parts[0].contains("://") logic, it should be consistent with other uri checks.

Current Behaviour

Inconsistent behavior for uri paths.

Reproduction Steps

Environment