code: inline `Traceback.getcrashentry` into `ExceptionInfo._getreprcrash`

Since `Traceback.getcrashentry` takes the `ExceptionInfo`, it is not
really independent of it and is in the wrong layer. Prevent nonsensical
mistakes by inlining it.

src/_pytest/_code/code.py

@@ -414,17 +414,6 @@ class Traceback(List[TracebackEntry]):
             fn = _excinfo_or_fn
         return Traceback(filter(fn, self))
 
-    def getcrashentry(
-        self, excinfo: Optional["ExceptionInfo[BaseException]"]
-    ) -> Optional[TracebackEntry]:
-        """Return last non-hidden traceback entry that lead to the exception of
-        a traceback, or None if all hidden."""
-        for i in range(-1, -len(self) - 1, -1):
-            entry = self[i]
-            if not entry.ishidden(excinfo):
-                return entry
-        return None
-
     def recursionindex(self) -> Optional[int]:
         """Return the index of the frame/TracebackEntry where recursion originates if
         appropriate, None if no recursion occurred."""
@@ -628,12 +617,15 @@ class ExceptionInfo(Generic[E]):
         return isinstance(self.value, exc)
 
     def _getreprcrash(self) -> Optional["ReprFileLocation"]:
-        exconly = self.exconly(tryshort=True)
-        entry = self.traceback.getcrashentry(self)
-        if entry is None:
-            return None
-        path, lineno = entry.frame.code.raw.co_filename, entry.lineno
-        return ReprFileLocation(path, lineno + 1, exconly)
+        # Find last non-hidden traceback entry that led to the exception of the
+        # traceback, or None if all hidden.
+        for i in range(-1, -len(self.traceback) - 1, -1):
+            entry = self.traceback[i]
+            if not entry.ishidden(self):
+                path, lineno = entry.frame.code.raw.co_filename, entry.lineno
+                exconly = self.exconly(tryshort=True)
+                return ReprFileLocation(path, lineno + 1, exconly)
+        return None
 
     def getrepr(
         self,

testing/code/test_excinfo.py

@@ -11,7 +11,7 @@ from typing import Tuple
 from typing import TYPE_CHECKING
 from typing import Union
 
-import _pytest
+import _pytest._code
 import pytest
 from _pytest._code.code import ExceptionChainRepr
 from _pytest._code.code import ExceptionInfo
@@ -290,7 +290,7 @@ class TestTraceback_f_g_h:
         excinfo = pytest.raises(ValueError, fail)
         assert excinfo.traceback.recursionindex() is None
 
-    def test_traceback_getcrashentry(self):
+    def test_getreprcrash(self):
         def i():
             __tracebackhide__ = True
             raise ValueError
@@ -306,15 +306,13 @@ class TestTraceback_f_g_h:
             g()
 
         excinfo = pytest.raises(ValueError, f)
-        tb = excinfo.traceback
-        entry = tb.getcrashentry(excinfo)
-        assert entry is not None
+        reprcrash = excinfo._getreprcrash()
+        assert reprcrash is not None
         co = _pytest._code.Code.from_function(h)
-        assert entry.frame.code.path == co.path
-        assert entry.lineno == co.firstlineno + 1
-        assert entry.frame.code.name == "h"
+        assert reprcrash.path == str(co.path)
+        assert reprcrash.lineno == co.firstlineno + 1 + 1
 
-    def test_traceback_getcrashentry_empty(self):
+    def test_getreprcrash_empty(self):
         def g():
             __tracebackhide__ = True
             raise ValueError
@@ -324,7 +322,7 @@ class TestTraceback_f_g_h:
             g()
 
         excinfo = pytest.raises(ValueError, f)
-        assert excinfo.traceback.getcrashentry(excinfo) is None
+        assert excinfo._getreprcrash() is None
 
 
 def test_excinfo_exconly():