Rename patch file to .patch to conform to naming standard which utili…

…zes .gitattributes settings (#32345)

Co-authored-by: stsean <stsean@justin.tv>

patches/chromium/.patches

@@ -108,7 +108,7 @@ process_singleton.patch
 fix_expose_decrementcapturercount_in_web_contents_impl.patch
 add_ui_scopedcliboardwriter_writeunsaferawdata.patch
 feat_add_data_parameter_to_processsingleton.patch
-mas_gate_private_enterprise_APIs
+mas_gate_private_enterprise_APIs.patch
 load_v8_snapshot_in_browser_process.patch
 fix_patch_out_permissions_checks_in_exclusive_access.patch
 fix_aspect_ratio_with_max_size.patch