[clang] [analyzer] Unbreak [[clang::suppress]] on checkers without decl-with-issue. (PR #79398)

[Balazs Benics via cfe-commits]

================
@@ -27,6 +28,8 @@ class PathDiagnosticLocation;
 
 class BugSuppression {
 public:
+  BugSuppression(ASTContext &ACtx) : ACtx(ACtx) {}
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steakhal wrote:

```suggestion
  explicit BugSuppression(const ASTContext &ACtx) : ACtx(ACtx) {}
```

https://github.com/llvm/llvm-project/pull/79398