gh-65961: Do not rely solely on __cached__ (GH-97990)

Make sure `__spec__.cached` (at minimum) can be used.

Lib/profile.py

@@ -24,6 +24,7 @@
 # governing permissions and limitations under the License.
 
 
+import importlib.machinery
 import sys
 import time
 import marshal
@@ -589,9 +590,12 @@ def main():
             sys.path.insert(0, os.path.dirname(progname))
             with open(progname, 'rb') as fp:
                 code = compile(fp.read(), progname, 'exec')
+            spec = importlib.machinery.ModuleSpec(name='__main__', loader=None,
+                                                  origin=progname)
             globs = {
-                '__file__': progname,
-                '__name__': '__main__',
+                '__spec__': spec,
+                '__file__': spec.origin,
+                '__name__': spec.name,
                 '__package__': None,
                 '__cached__': None,
             }