build: Add deprecation warning when compile=aot is used for building with Ivy (#34109)

To inform downstream users to switch to using angular_ivy_enabled as the build
variable for setting Ivy, a deprecation message is printed instructing the user
to migrate away from building with compile=*

PR Close #34109

packages/bazel/src/ng_module.bzl

@@ -35,9 +35,10 @@ def is_ivy_enabled(ctx):
     Returns:
       Boolean, Whether the ivy compiler should be used.
     """
-
     # TODO(josephperrott): Remove configuration via compile=aot define flag.
     if ctx.var.get("compile", None) == "aot":
+        print("Setting ViewEngine/Ivy using the compile build variable (--define=compile=*) " +
+              "is deprecated, please use the angular_ivy_enabled build variable instead.")
         return True
 
     if ctx.var.get("angular_ivy_enabled", None) == "True":