feat(feedback/v7): Make "required" text for input elements configurable

[billyvg]

Backport of #11153

From the OP (h/t @soerface):

This introduces an option isRequiredLabel, and I planned to also add errorMessageText.

However, this PR is branched off from a version that is a couple days old. Right now, @c298lee is currently working on getsentry/sentry#63749, which is causing major changes and the current version on master doesn't work yet. Therefore, I didn't yet implement errorMessageText.

So consider this PR as a PoC, and either feel free to tag me when the screenshot changes are done – then I'll redo the changes based on the version that supports screenshots – or add the option on your own; however you prefer 🙂

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay, Feedback) - Webpack (gzipped)	80.47 KB (+0.04% 🔺)
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	71.47 KB (0%)
@sentry/browser (incl. Tracing, Replay with Canvas) - Webpack (gzipped)	75.47 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	65.1 KB (0%)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	35.4 KB (0%)
@sentry/browser (incl. browserTracingIntegration) - Webpack (gzipped)	35.29 KB (0%)
@sentry/browser (incl. Feedback) - Webpack (gzipped)	31.52 KB (+0.09% 🔺)
@sentry/browser (incl. sendFeedback) - Webpack (gzipped)	31.53 KB (+0.09% 🔺)
@sentry/browser - Webpack (gzipped)	22.74 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback) - ES6 CDN Bundle (gzipped)	78.58 KB (+0.05% 🔺)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	69.97 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	35.77 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped)	25.17 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	220.29 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	108.1 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	75.48 KB (0%)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	38.99 KB (0%)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	71.96 KB (0%)
@sentry/react - Webpack (gzipped)	22.77 KB (0%)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	89.81 KB (0%)
@sentry/nextjs Client - Webpack (gzipped)	53.95 KB (0%)
@sentry-internal/feedback - Webpack (gzipped)	17.3 KB (+0.15% 🔺)