fix(prediction): green up CI for the new PV providers (mypy + provider sequence)

- Use urllib.parse.quote instead of requests.utils.quote in the pvnode and
  Solcast providers: the runtime re-export exists, but the requests type stubs
  do not declare it, so the pre-commit mypy hook failed with
  'Module has no attribute "quote"'.
- Mark the force_update keyword in the new provider tests with `# type: ignore`
  — it is consumed by the cache_in_file decorator at runtime; same call
  convention and ignore style as pvforecastakkudoktor.py.
- Add PVForecastPVNode, PVForecastForecastSolar and PVForecastSolcast to the
  expected provider sequence in tests/test_prediction.py (fixture + index
  assertions) — the two sequence tests failed because the new providers were
  registered in prediction.py but missing from the hardcoded expectations.

src/akkudoktoreos/prediction/pvforecastpvnode.py

@@ -22,6 +22,7 @@ Notes:
 
 import re
 from typing import Any, Optional
+from urllib.parse import quote
 
 import pendulum
 import requests
@@ -165,7 +166,7 @@ class PVForecastPVNode(PVForecastProvider):
 
         try:
             if site_id:
-                url = f"{PVNODE_BASE}/forecast/{requests.utils.quote(site_id, safe='')}"
+                url = f"{PVNODE_BASE}/forecast/{quote(site_id, safe='')}"
                 response = requests.get(url, headers=headers, params=params, timeout=30)
             else:
                 body = self._inline_body()