[clangd] Dont include file version in task name

[kadircet]

Summary

This will drop file version information from span names, reducing
overall cardinality and also effect logging when skipping actions in scheduler.

clang-tools-extra/clangd/TUScheduler.cpp

if (LatestBuild && isReliable(LatestBuild->CompileCommand))
     HeaderIncluders.update(FileName, LatestBuild->Includes.allHeaders());
 }
 
 void ASTWorker::updatePreamble(std::unique_ptr<CompilerInvocation> CI,
                                ParseInputs PI,
                                std::shared_ptr<const PreambleData> Preamble,
                                std::vector<Diag> CIDiags,
                                WantDiagnostics WantDiags) {
-  std::string TaskName = llvm::formatv("Build AST for ({0})", PI.Version);
+  llvm::StringLiteral TaskName = "Build AST";
   // Store preamble and build diagnostics with new preamble if requested.
   auto Task = [this, Preamble = std::move(Preamble), CI = std::move(CI),
                PI = std::move(PI), CIDiags = std::move(CIDiags),
                WantDiags = std::move(WantDiags)]() mutable {
     // Update the preamble inside ASTWorker queue to ensure atomicity. As a task
     // running inside ASTWorker assumes internals won't change until it
     // finishes.
     if (!LatestPreamble || Preamble != *LatestPreamble) {
auto Task = [this, Preamble = std::move(Preamble), CI = std::move(CI),
     generateDiagnostics(std::move(CI), std::move(PI), std::move(CIDiags));
   };
   if (RunSync) {
     runTask(TaskName, Task);
     return;
   }
   {
     std::lock_guard<std::mutex> Lock(Mutex);
-    PreambleRequests.push_back({std::move(Task), std::move(TaskName),
+    PreambleRequests.push_back({std::move(Task), std::string(TaskName),
                                 steady_clock::now(), Context::current().clone(),
                                 llvm::None, llvm::None,
                                 TUScheduler::NoInvalidation, nullptr});
   }
   PreambleCV.notify_all();
   RequestsCV.notify_all();
 }