ref(spotlight): Do not import sentry_sdk.spotlight unless enabled (#4607)

Closes #4605

Author: sentrivana

sentry_sdk/client.py

@@ -47,7 +47,6 @@
 )
 from sentry_sdk.scrubber import EventScrubber
 from sentry_sdk.monitor import Monitor
-from sentry_sdk.spotlight import setup_spotlight
 
 if TYPE_CHECKING:
     from typing import Any
@@ -429,6 +428,10 @@ def _capture_envelope(envelope):
                 )
 
             if self.options.get("spotlight"):
+                # This is intentionally here to prevent setting up spotlight
+                # stuff we don't need unless spotlight is explicitly enabled
+                from sentry_sdk.spotlight import setup_spotlight
+
                 self.spotlight = setup_spotlight(self.options)
                 if not self.options["dsn"]:
                     sample_all = lambda *_args, **_kwargs: 1.0