fix(feedback): Fix timeout on feedback submission

[c298lee]

The timeout id wasn't getting reset to null after submission which was causing additional clicks on the feedback button to pop up the success message instead. Now, a click on the success message brings back the feedback button, which brings up the dialog when clicked.

Fixes #418

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser	22.16 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing)	31.74 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay)	67.05 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	60.47 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay with Canvas)	70.88 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay, Feedback)	80.79 KB (+0.01% 🔺)
@sentry/browser (incl. Feedback)	35.72 KB (+0.02% 🔺)
@sentry/browser (incl. Feedback, Feedback Modal)	35.72 KB (+0.02% 🔺)
@sentry/browser (incl. Feedback, Feedback Modal, Feedback Screenshot)	37.75 KB (+0.02% 🔺)
@sentry/browser (incl. sendFeedback)	26.95 KB (-0.01% 🔽)
@sentry/react	24.84 KB (-0.01% 🔽)
@sentry/react (incl. Tracing)	34.64 KB (-0.01% 🔽)
@sentry/vue	25.72 KB (-0.01% 🔽)
@sentry/vue (incl. Tracing)	33.45 KB (-0.01% 🔽)
@sentry/svelte	22.28 KB (-0.02% 🔽)
CDN Bundle	24.47 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing)	32.97 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay)	66.59 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay, Feedback)	82.81 KB (+0.01% 🔺)
CDN Bundle - uncompressed	72.9 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing) - uncompressed	98.89 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay) - uncompressed	208.55 KB (-0.01% 🔽)
@sentry/nextjs (client)	34.01 KB (-0.01% 🔽)
@sentry/sveltekit (client)	32.25 KB (-0.01% 🔽)
@sentry/node	120.17 KB (-0.01% 🔽)