Clean up a few types

Convert lines when `parse=False` from generator to list.
The result when `parse=False` is only used in a warning message,
and I don't think the generator would even print properly.

Author: maresb

pytensor/link/c/cmodule.py

@@ -2120,10 +2120,10 @@ def get_lines(cmd: list[str] | str, parse: bool = True) -> list[str] | None:
             if p.returncode != 0:
                 return None
 
-            lines = BytesIO(stdout + stderr).readlines()
-            lines = (l.decode() for l in lines)
+            lines_bytes = BytesIO(stdout + stderr).readlines()
+            lines = [l.decode() for l in lines_bytes]
             if parse:
-                selected_lines = []
+                selected_lines: list[str] = []
                 for line in lines:
                     if (
                         "COLLECT_GCC_OPTIONS=" in line