fix(parser): correct skip_until TextSpan range

[MoNyAvA]

Summary

adjusted skip_until to derive the span directly from the token text range (excluding trivia) and added a focused unit test that checks the returned TextSpan covers all skipped tokens and starts at the first non-trivia character.

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Type of change

Please check one:

• Bug fix (fixes incorrect behavior)

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Why is this change needed?

Before this change, skip_until was computing SkippedElement spans from the raw parser offset, including leading trivia and stopping inside the token text. As a result, diagnostics for skipped tokens were slightly shifted and inconsistent with other span calculations.

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[reviewable-StarkWare]

This change is 

[orizi]

@orizi made 1 comment.
Reviewable status: 0 of 2 files reviewed, 1 unresolved discussion (waiting on @MoNyAvA).

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crates/cairo-lang-parser/src/parser_test.rs line 128 at r1 (raw file):

#[test]
fn skip_until_span_excludes_leading_trivia_and_covers_all_tokens() {

add tests in the parser diagnostics tests.

in a relevant file at crates/cairo-lang-parser/src/parser_test_data/diagnostics/

i don't have any idea what is the issue without that.

if no cairo code can create this issue - close PR.