Fix WebGPU ConvTranspose bias validation in TypeScript and C++ implem… #8504

Job	Run time
4. Build Minimal (Globally Allowed Types)	8m 22s
1. Build Full ORT and Generate ORT Files	17m 35s
6a. Build Regular (No Optional Features)	12m 49s
5. Build Extended Minimal	11m 38s
2. Build Minimal (Exceptions Disabled)	10m 24s
6b. Build Minimal (No Optional Features)	8m 28s
6c. Build Extended Minimal (No Optional Features)	8m 45s
3b. Build Minimal (Type Reduction)	8m 48s
3a. Build Minimal (Custom Ops)	8m 58s
7. Build Extended Minimal (Android NNAPI)	10m 6s
	1h 45m 53s

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