Auto merge of #27614 - kunalmohan:webgpu-cts, r=kvark

Minor fixes and update cts

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- Prevent redundant buffer and texture destroy calls.
- More subtests for B2B copy pass now.
- All tests under `setViewport()` and `setScissorRect()` pass now.
- Tests for `createTexture()` do not crash. More than 50% of them pass now.

r?@kvark

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [X] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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1 files changed, 1 insertions, 0 deletions

diff --git a/components/script/dom/gpubuffer.rs b/components/script/dom/gpubuffer.rs
index 2d721465e68..60a6075cb7f 100644
--- a/components/script/dom/gpubuffer.rs
+++ b/components/script/dom/gpubuffer.rs
@@ -184,6 +184,7 @@ impl GPUBufferMethods for GPUBuffer {
             GPUBufferState::Mapped | GPUBufferState::MappedAtCreation => {
                 self.Unmap();
             },
+            GPUBufferState::Destroyed => return,
             _ => {},
         };
         if let Err(e) = self