[MLIR] Add MLIRConversionPassIncGen to cmake deps for FrozenRewritePatternSet (llvm#110054)

Fixes missing header in downstream circt python wheel build (e.g.
https://github.com/llvm/circt/actions/runs/11022589675/job/30612234430).

Confirmed by
* https://github.com/llvm/circt/actions/runs/11040046220/job/30667073462
*
llvm/circt@0646e7e

Author: leonardt

mlir/lib/Rewrite/CMakeLists.txt

@@ -9,6 +9,7 @@ add_mlir_library(MLIRRewrite
 
   DEPENDS
   mlir-generic-headers
+  MLIRConversionPassIncGen
 
   LINK_LIBS PUBLIC
   MLIRIR