[llvm-lit] Fix Unhashable TypeError when using lit's internal shell (#101590)

When using the lit internal shell with the command:
```
LIT_USE_INTERNAL_SHELL=1 ninja check-compiler-rt
```
The follow error is encountered:
```
File "TestRunner.py", line 770, in _executeShCmd
    inproc_builtin = inproc_builtins.get(args[0], None)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: unhashable type: 'GlobItem'
```
This error is in a compiler-rt file:
```
TestCases/Linux/long-object-path.cpp
```
This error occurs because `args[0]` is of type `GlobItem`, which is not
hashable, leading to a `TypeError` when it is passed in
`inproc_builtins.get()`. To resolve this issue, I have updated the
implementation to ensure that `args[0]` is hashable before it is used in
`inproc_builtins`.
fixes: #102389
[link to
RFC](https://discourse.llvm.org/t/rfc-enabling-the-lit-internal-shell-by-default/80179)

0 files changed, 0 insertions, 0 deletions