assertion rewriting ignores the original source positions

[15r10nk]

The assertion rewriting in pytest changes the source position for all nodes in the assertion to the source range of the assertion.

pytest/src/_pytest/assertion/rewrite.py

Lines 976 to 978 in 9515dfa

	for stmt in self.statements:
	for node in traverse_node(stmt):
	ast.copy_location(node, assert_)

This causes problems for tools like executing which uses these source ranges (since python 3.11) to provide a mapping back to the ast-node.

This causes the following problems.

• Support pytest alexmojaki/executing#2 (comment) executing does not work inside assertions.
• Allow fixing snapshots without disabling pytest rewriting 15r10nk/inline-snapshot#57 I have to disable assertion rewriting to be able to find ast-nodes with executing.
• ... maybe more

I already created a pull-request to solve this problem #12815.