test(http-client-java): add e2e test

[Copilot]

The Java route end-to-end tests still left one unsupported query expansion explode case enabled after the earlier test split. This branch finishes that cleanup by grouping the remaining known-broken route query expansion cases under disabled coverage instead of letting them fail active runs.

• What changed

  • Moved the remaining testQueryExpansionExplode route case into the disabled set in routes/RouteTests.
  • Kept the previously isolated record/map-valued query expansion cases in the same disabled section so unsupported route query expansion coverage is grouped consistently.

• Why this matters

  • Active route tests now cover only supported query expansion behavior.
  • Known unsupported explode/object and record/map serialization cases remain visible in source without breaking the main test pass.

• Code shape

  @Test
  @Disabled("Blocked by current query object expansion serialization behavior for explode cases")
  public void testQueryExpansionExplode() {
      var client = new RoutesClientBuilder().buildQueryParametersQueryExpansionExplodeClient();
      client.primitive("a");
      client.array(List.of("a", "b"));
      client.model(new ExpandParameters("status", "active"));
  }

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[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-java

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@typespec/http-client-java - internal ✏️

Add SpecialChars e2e test, encode/boolean test (disabled), and type/union/discriminated e2e tests

[azure-sdk-automation]

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