Allow macro annotations to recover from suspension

[hamzaremmal]

This changes makes the execution of the test case in #20353 stable across different run

[hamzaremmal]

When using the example in #20353, without the proposed fix, the compiler won't crash with the proposed fix here:

compiling suspended tests/pos-macros/i20353/Test_2.scala
  tests/pos-macros/i20353/Test_2.scala at inlining: suspension triggered by macro call to method $anonfun in class OuterClass in tests/pos-macros/i20353/Test_2.scala, suspension triggered by macro call to method makeImplicitValue in object ImplicitValue in tests/pos-macros/i20353/Macro_1.scala
Cyclic macro dependencies in tests/pos-macros/i20353/Test_2.scala.
Compilation stopped since no further progress can be made.

To fix this, place macros in one set of files and their callers in another.
1 error found