[libclc] [llvm] [libclc][CI] Enable libclc in premerge CI with single target (PR #186104)

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``````````diff
--- compute_projects.py	2026-03-12 12:07:32.000000 +0000
+++ compute_projects.py	2026-03-12 12:09:28.674236 +0000
@@ -155,11 +155,19 @@
     "openmp": "check-openmp",
     "polly": "check-polly",
     "lit": "check-lit",
 }
 
-RUNTIMES = {"libcxx", "libcxxabi", "libunwind", "compiler-rt", "libc", "flang-rt", "libclc"}
+RUNTIMES = {
+    "libcxx",
+    "libcxxabi",
+    "libunwind",
+    "compiler-rt",
+    "libc",
+    "flang-rt",
+    "libclc",
+}
 
 # Meta projects are projects that need explicit handling but do not reside
 # in their own top level folder. To add a meta project, the start of the path
 # for the metaproject should be mapped to the name of the project below.
 # Multiple paths can map to the same metaproject.

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https://github.com/llvm/llvm-project/pull/186104