validation: missing checks for SampledCubeArray and ImageCubeArray capabilities

Here's a module that should require SampledCubeArray capability, but passes validation:

```
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main"
OpExecutionMode %main OriginUpperLeft
OpName %t "t"
OpName %s "s"
OpName %main "main"
OpDecorate %t DescriptorSet 0
OpDecorate %t Binding 0
OpDecorate %s DescriptorSet 0
OpDecorate %s Binding 1
%float = OpTypeFloat 32
%3 = OpTypeImage %float Cube 0 1 0 1 Unknown
%_ptr_UniformConstant_3 = OpTypePointer UniformConstant %3
%t = OpVariable %_ptr_UniformConstant_3 UniformConstant
%7 = OpTypeSampler
%_ptr_UniformConstant_7 = OpTypePointer UniformConstant %7
%s = OpVariable %_ptr_UniformConstant_7 UniformConstant
%void = OpTypeVoid
%8 = OpTypeFunction %void
%v4float = OpTypeVector %float 4
%16 = OpTypeSampledImage %3
%v3float = OpTypeVector %float 3
%float_1 = OpConstant %float 1
%20 = OpConstantComposite %v3float %float_1 %float_1 %float_1
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%main = OpFunction %void None %8
%11 = OpLabel
%14 = OpLoad %7 %s
%15 = OpLoad %3 %t
%17 = OpSampledImage %16 %15 %14
%21 = OpCompositeExtract %float %20 0
%22 = OpCompositeExtract %float %20 1
%23 = OpCompositeExtract %float %20 2
%24 = OpConvertSToF %float %int_0
%27 = OpCompositeConstruct %v4float %21 %22 %23 %24
%12 = OpImageSampleImplicitLod %v4float %17 %27
OpReturn
OpFunctionEnd
```

I couldn't find tests for these two capabilities.

I'm also not sure if Sampled1D and Image1D are checked.

No source file or test path is named. Start with the supplied SPIR-V module and locate existing capability-validation tests; done means validation rejects the missing SampledCubeArray and ImageCubeArray capabilities, with coverage for the noted 1D cases if applicable.

Written by the indexing model from the issue text.