Revert "prefer to avoid casts (#468)"

[neersighted]

This reverts commit 743e09c.

At runtime, during consumption via the prepare_metadata_for_build_wheel,
API, some of these values were in fact not what their typing was
asserted to be. This would cause a failure when the assertion failed.

[sonarcloud]

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0 Bugs
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0.8% Duplication

[dimbleby]

OutOfOrderTableProxy?!? aren't tomlkit types fun?

full reversion of this MR is an overshoot but I suppose it's simple enough to revert most of the revert

[dimbleby]

diff --git a/src/poetry/core/pyproject/toml.py b/src/poetry/core/pyproject/toml.py
index 6c8e79c..6e55912 100644
--- a/src/poetry/core/pyproject/toml.py
+++ b/src/poetry/core/pyproject/toml.py
@@ -64,14 +64,14 @@ class PyProjectTOML:
         return self._build_system

     @property
-    def poetry_config(self) -> Table:
+    def poetry_config(self) -> dict[str, Any]:
         from tomlkit.exceptions import NonExistentKey

         try:
             tool = self.data["tool"]
             assert isinstance(tool, dict)
             config = tool["poetry"]
-            assert isinstance(config, Table)
+            assert isinstance(config, dict)
             return config

should be enough

[neersighted]

I'm going with the full revert for 1.3.1 -- a PR with a V2 that fixes the assertion is very welcome.