Ruby: Address testFailures in inline expectations tests (part 1)

[geoffw0]

Address testFailures in inline expectations tests. Annotations should always be updated so that the testFailures section of the .expected file is empty.

I don't think there are any surprises here, just some missing inline expectations tags.

[Copilot]

Pull request overview

This PR fixes Ruby inline-expectations library tests by adding missing inline expectation annotations and updating the corresponding .expected files so the testFailures sections are empty again.

Changes:

• Added missing inline expectation markers (including SPURIOUS where appropriate) in Ruby test sources.
• Updated affected .expected files to remove previously recorded Unexpected result failures.

Show a summary per file

File	Description
ruby/ql/test/library-tests/frameworks/action_controller/params-flow.expected	Removes testFailures entries now covered by inline expectations in filter_flow.rb.
ruby/ql/test/library-tests/frameworks/action_controller/filter_flow.rb	Adds inline expectation tags for taint flow (and marks expected false positives as SPURIOUS).
ruby/ql/test/library-tests/dataflow/string-flow/string-flow.expected	Removes testFailures entries now accounted for by inline expectations in string_flow.rb.
ruby/ql/test/library-tests/dataflow/string-flow/string_flow.rb	Adds inline expectation tags for value-flow false positives (and annotates them as SPURIOUS).

Review details

• Files reviewed: 4/4 changed files
• Comments generated: 0
• Review effort level: Low