Fix WebGPU limits.maxBufferSize, these are 64-bit iso 32-bit (#22187)

Fix implementation of WebGPU limit queries, `maxBufferSize` is 64-bit
instead of 32-bit.

There was already a test for this
(`browser.test_webgpu_required_limits`), but that one was failing on my
end (I do have >4GB VRAM).

Author: croes

src/library_webgpu.js

@@ -380,7 +380,7 @@ var LibraryWebGPU = {
       setLimitValueU64('maxStorageBufferBindingSize', {{{ C_STRUCTS.WGPULimits.maxStorageBufferBindingSize }}});
 
       setLimitValueU32('maxVertexBuffers', {{{ C_STRUCTS.WGPULimits.maxVertexBuffers }}});
-      setLimitValueU32('maxBufferSize', {{{ C_STRUCTS.WGPULimits.maxBufferSize }}});
+      setLimitValueU64('maxBufferSize', {{{ C_STRUCTS.WGPULimits.maxBufferSize }}});
       setLimitValueU32('maxVertexAttributes', {{{ C_STRUCTS.WGPULimits.maxVertexAttributes }}});
       setLimitValueU32('maxVertexBufferArrayStride', {{{ C_STRUCTS.WGPULimits.maxVertexBufferArrayStride }}});
       setLimitValueU32('maxInterStageShaderComponents', {{{ C_STRUCTS.WGPULimits.maxInterStageShaderComponents }}});
@@ -2667,7 +2667,7 @@ var LibraryWebGPU = {
         setLimitU64IfDefined("maxUniformBufferBindingSize", {{{ C_STRUCTS.WGPULimits.maxUniformBufferBindingSize }}});
         setLimitU64IfDefined("maxStorageBufferBindingSize", {{{ C_STRUCTS.WGPULimits.maxStorageBufferBindingSize }}});
         setLimitU32IfDefined("maxVertexBuffers", {{{ C_STRUCTS.WGPULimits.maxVertexBuffers }}});
-        setLimitU32IfDefined("maxBufferSize", {{{ C_STRUCTS.WGPULimits.maxBufferSize }}});
+        setLimitU64IfDefined("maxBufferSize", {{{ C_STRUCTS.WGPULimits.maxBufferSize }}});
         setLimitU32IfDefined("maxVertexAttributes", {{{ C_STRUCTS.WGPULimits.maxVertexAttributes }}});
         setLimitU32IfDefined("maxVertexBufferArrayStride", {{{ C_STRUCTS.WGPULimits.maxVertexBufferArrayStride }}});
         setLimitU32IfDefined("maxInterStageShaderComponents", {{{ C_STRUCTS.WGPULimits.maxInterStageShaderComponents }}});