[IMP] tools: ignore line number for code translations

The line number was only indicative and was not used by the system.
When the translations source were updated, a big part of the diff was
only about the line numbers.
Ignore the given res_id value and export the line at 0

When reading the po file, the res_id from the file is still read and
stored in database but should be ignored

closes odoo/odoo#35582

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

odoo/tools/translate.py

@@ -748,6 +748,7 @@ class PoFileWriter:
         for typy, name, res_id in tnrs:
             if typy == 'code':
                 code = True
+                res_id = 0
             if isinstance(res_id, int) or res_id.isdigit():
                 # second term of occurrence must be a digit
                 # occurrence line at 0 are discarded when rendered to string