ref(core): Directly use endSession

[AbhiPrasad]

Instead of using this.endSession, directly use endSession.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser	21.67 KB (0%)
@sentry/browser (incl. Tracing)	31.46 KB (0%)
@sentry/browser (incl. Tracing, Replay)	66.79 KB (0%)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	60.19 KB (0%)
@sentry/browser (incl. Tracing, Replay with Canvas)	70.62 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback)	80.5 KB (0%)
@sentry/browser (incl. Feedback)	35.25 KB (0%)
@sentry/browser (incl. Feedback, Feedback Modal)	35.25 KB (0%)
@sentry/browser (incl. Feedback, Feedback Modal, Feedback Screenshot)	37.28 KB (0%)
@sentry/browser (incl. sendFeedback)	26.46 KB (0%)
@sentry/react	24.35 KB (0%)
@sentry/react (incl. Tracing)	34.37 KB (0%)
@sentry/vue	25.2 KB (0%)
@sentry/vue (incl. Tracing)	33.18 KB (0%)
@sentry/svelte	21.79 KB (0%)
CDN Bundle	24.03 KB (-0.02% 🔽)
CDN Bundle (incl. Tracing)	32.76 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay)	66.39 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay, Feedback)	82.6 KB (0%)
CDN Bundle - uncompressed	70.85 KB (-0.02% 🔽)
CDN Bundle (incl. Tracing) - uncompressed	97.58 KB (-0.02% 🔽)
CDN Bundle (incl. Tracing, Replay) - uncompressed	207.24 KB (-0.01% 🔽)
@sentry/nextjs (client)	33.7 KB (0%)
@sentry/sveltekit (client)	31.96 KB (0%)
@sentry/node	155.86 KB (+0.01% 🔺)