rawgpsd: retry injecting assistance data (#29115)

* rawgpsd: retry injecting assistance data

* sleep a bit

---------

Co-authored-by: Comma Device <device@comma.ai>

system/sensord/rawgps/rawgpsd.py

@@ -149,10 +149,12 @@ def downloader_loop(event):
     time.sleep(10)
 
 def inject_assistance():
+  for _ in range(5):
     try:
       cmd = f"mmcli -m any --timeout 30 --location-inject-assistance-data={ASSIST_DATA_FILE}"
       subprocess.check_output(cmd, stderr=subprocess.PIPE, shell=True)
       cloudlog.info("successfully loaded assistance data")
+      return
     except subprocess.CalledProcessError as e:
       cloudlog.event(
         "rawgps.assistance_loading_failed",
@@ -161,6 +163,8 @@ def inject_assistance():
         output=e.output,
         returncode=e.returncode
       )
+    time.sleep(0.2)
+  cloudlog.error("failed to load assistance after retry")
 
 def setup_quectel(diag: ModemDiag) -> bool:
   ret = False