spt file containing GlobalVariableHostAccessINTEL changes after -to-binary and then -to-text

Content of global_var_host_access.spt:
```
119734787 65536 393230 10 0
2 Capability Addresses
2 Capability Linkage
2 Capability Kernel
2 Capability GlobalVariableHostAccessINTEL
11 Extension "SPV_INTEL_global_variable_host_access"
5 ExtInstImport 1 "OpenCL.std"
3 MemoryModel 2 2
3 Source 0 0
4 Name 5 "int_var"
5 Name 9 "bool_var"

6 Decorate 5 LinkageAttributes "int_var" Export
7 Decorate 5 HostAccessINTEL ReadINTEL "IntVarName"
7 Decorate 9 LinkageAttributes "bool_var" Export
7 Decorate 9 HostAccessINTEL ReadWriteINTEL "BoolVarName"
4 TypeInt 2 32 0
4 Constant 2 4 42
4 TypePointer 3 5 2
2 TypeBool 6
4 TypePointer 7 5 6
5 Variable 3 5 5 4
3 ConstantFalse 6 8
5 Variable 7 9 5 8
```
Apply commands `llvm-spirv -to-binary global_var_host_access.spt` and then `llvm-spirv -to-text global_var_host_access.spv -o global_var_host_access.spv.spt`. Output global_var_host_access.spv.spt is
```
119734787 65536 393230 10 0
2 Capability Addresses
2 Capability Linkage
2 Capability Kernel
2 Capability GlobalVariableDecorationsINTEL
2 Capability GlobalVariableHostAccessINTEL
11 Extension "SPV_INTEL_global_variable_host_access"
5 ExtInstImport 1 "OpenCL.std"
3 MemoryModel 2 2
3 Source 0 0
4 Name 5 "int_var"
5 Name 9 "bool_var"

6 Decorate 5 LinkageAttributes "int_var" Export
7 Decorate 5 HostAccessINTEL 0 ""
```
Differences in the new global_var_host_access.spv.spt:
1. GlobalVariableDecorationsINTEL is added
2. In `Decorate 5`, `ReadINTEL "IntVarName"` are missing
3. `Decorate 9` is missing
4. two global variables are missing

Please check if there is expected.

Reproduce the round trip with global_var_host_access.spt using llvm-spirv -to-binary and -to-text, then compare the generated .spv.spt with the input decorations and variables. Determine whether the GlobalVariableHostAccessINTEL decorations and global variables should be preserved, and document the expected output.

Written by the indexing model from the issue text.