Update string formatting for Rust 1.88 compatibility

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[Copilot]

Pull Request Overview

This PR modernizes string formatting across the codebase to use inline formatting ({var}) introduced in Rust 1.88, replacing legacy {}-based formatting in format!, println!, and write! macros.

• Convert format!("…{}", var) and similar patterns to format!("…{var}")
• Update println!, write!, and panic messages to inline formatting
• Adjust a few API calls (e.g., Path and slice methods) for compatibility

Reviewed Changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/unit/resources/resource_storage.rs	Use inline format! in scriptlet resource tests
tests/unit/resources/resource_assembler.rs	Use inline format! in resource assembler tests
tests/unit/optimizer.rs	Use inline format! in optimizer tests
tests/unit/filters/network_matchers.rs	Use inline format! in network matcher tests
tests/unit/filters/network.rs	Use inline format! in parse tests
tests/unit/filters/cosmetic.rs	Use inline format! in cosmetic filter tests
tests/unit/engine.rs	Use inline format! in engine tests
tests/unit/blocker.rs	Use inline format! in blocker tests
tests/matching.rs	Use inline format! in matching tests
tests/live.rs	Use inline format! in live test output
tests/legacy_harness.rs	Use inline format! in legacy harness tests
src/url_parser/parser.rs	Use inline write! in URL serialization
src/resources/resource_storage.rs	Use inline format! in argument stringification
src/resources/resource_assembler.rs	Use inline panic! formatting for missing file error
src/resources/mod.rs	Use inline eprintln! and write! in MimeType impl
src/regex_manager.rs	Use inline format! in regex manager pattern building
src/network_filter_list.rs	Use inline write! in CheckResult Display
src/filters/cosmetic.rs	Use inline format! in CSS validation logic
src/cosmetic_filter_cache.rs	Use inline format! in selector list generation
src/content_blocking.rs	Use inline format! in content blocking conversion
src/blocker.rs	Use inline format! in query param and URL assembly
js/src/lib.rs	Update Neon API calls and inline formatting in error branch
fuzz/fuzz_targets/parse_request.rs	Use inline format! in fuzz target URL construction
examples/use-dat.rs	Use inline println! formatting in example
examples/example.rs	Use inline println! formatting in example
examples/deserialization.rs	Use inline println! formatting in deserialization example
benches/bench_redirect_performance.rs	Use inline format! in benchmark setup and assertions