[lldb] Fix crash when evaluating expressions in Wasm targets (#192893) LLDB crashes with "LLVM ERROR: Incompatible object format!" when evaluating expressions while debugging WebAssembly because ProcessWasm never disables JIT. RuntimeDyld only supports ELF, MachO, and COFF object formats, so attempting to JIT-compile an expression for a Wasm target produces the aforementioned fatal error. This PR avoids the crash by calling `SetCanJIT(false)` in the `ProcessWasm` ctor. Simple expressions will still work via the IR interpreter, while expression requiring the JIT now show a proper error message instead of crashing. Fixes #179915
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