Adds support for useHostNetwork the unity-builder (#828)

* fix: remove concurrency block from reusable workflow to prevent deadlock

When integrity-check.yml calls validate-orchestrator-integration.yml via
workflow_call, both workflows resolve github.workflow to the same name
("Integrity"), creating identical concurrency groups. GitHub detects this
as a deadlock and cancels the run.

Fix: remove concurrency from the reusable workflow entirely — the caller
already manages concurrency for the group.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add optional argument to action

* Add useHostNetwork to Input class

* Adds useHostNetwork to BuildParameters

* Uses useHostNetwork in docker arguments for the linux command

* Adds tests for Inputs

* Tests for Build Parameters

* Use latests unity version for Xcode compatibility with modern versions

* chore: rebuild dist after rebase onto main

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: frostebite <jas.f.ukcmti@gmail.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/model/input.ts

@@ -139,6 +139,12 @@ class Input {
     return Input.getInput('customParameters') ?? '';
   }
 
+  static get useHostNetwork(): boolean {
+    const input = Input.getInput('useHostNetwork') ?? false;
+
+    return input === 'true';
+  }
+
   static get versioningStrategy(): string {
     return Input.getInput('versioning') ?? 'Semantic';
   }