refactor: replace quick-junit test reporter dependency (#34315)

## Summary
- Replaces the JUnit test reporter's `quick-junit` dependency with a
small local XML writer tailored to the existing reporter output.
- Preserves generated JUnit report structure and escaping behavior for
test cases, failures, errors, skipped tests, timings, and properties.
- Removes `quick-junit` and its now-unused transitive packages from
dependency metadata.

## Validation
- Ran focused Rust tests for the JUnit reporter.
- Ran JUnit-related spec tests where practical.
- Confirmed the dependency graph and lockfile no longer include the
removed packages.

Co-authored-by: Nathan Whitaker <nathan@deno.com>

Author: nathanwhitbot

Cargo.lock

@@ -270,7 +270,6 @@ prettyplease = "0.2.31"
 proc-macro2 = "1.0"
 proptest = "1"
 prost = "0.13"
-quick-junit = "0.3.5"
 quinn = { version = "0.11.8", default-features = false }
 rand = "=0.8.5"
 rayon = "1.11.0"

Cargo.toml

@@ -152,7 +152,6 @@ pathdiff.workspace = true
 percent-encoding.workspace = true
 phf.workspace = true
 pretty_yaml.workspace = true
-quick-junit.workspace = true
 rand = { workspace = true, features = ["small_rng"] }
 regex.workspace = true
 rustc-hash.workspace = true