ci: bump CIRCT ref — build native MLIRTableGen before CIRCT NATIVE cmake

The CIRCT NATIVE cmake links circt-tblgen against libMLIRTableGen.a from
the LLVM NATIVE build, but the LLVM NATIVE build only compiles
llvm-min-tblgen by default. Added an explicit cmake step in the CIRCT fork
that builds MLIRTableGen natively before CONFIGURE_CIRCT_NATIVE runs.

CIRCT ref: 0fba0bf3395beeb8b1ef8614a4e0abfc58ab09e7

Author: thomasahle

scripts/toolchain.lock.sh

@@ -7,7 +7,7 @@ readonly NODE_MAJOR_VERSION_LOCKED="22"
 readonly EMSDK_VERSION_LOCKED="4.0.21"
 
 readonly CIRCT_REPO_LOCKED="https://github.com/thomasnormal/circt.git"
-readonly CIRCT_REF_LOCKED="6b1f2e8b799352ff3dce2d1ebc6f3eb8f2e360c7"
+readonly CIRCT_REF_LOCKED="0fba0bf3395beeb8b1ef8614a4e0abfc58ab09e7"
 readonly CIRCT_LLVM_SUBMODULE_REF_LOCKED="972cd847efb20661ea7ee8982dd19730aa040c75"
 
 readonly SURFER_ARTIFACT_URL_LOCKED="https://gitlab.com/surfer-project/surfer/-/jobs/artifacts/main/download?job=pages_build"