Fix ExtraFrameworkDependency Framework detection

The name splitting was wrong and would not incorrectly handle folders
with two dots, like Foo.framework.dSYM and treat this as 'Foo' instead
of 'Foo.framework', which would lead to meson detecting dSYM bundles
as frameworks and try to use those like a framework, which is wrong.

Fix #3793

mesonbuild/dependencies/base.py

@@ -1003,7 +1003,7 @@ class ExtraFrameworkDependency(ExternalDependency):
         for p in paths:
             for d in os.listdir(p):
                 fullpath = os.path.join(p, d)
-                if lname != d.split('.')[0].lower():
+                if lname != d.rsplit('.', 1)[0].lower():
                     continue
                 if not stat.S_ISDIR(os.stat(fullpath).st_mode):
                     continue