fix(core): Drop long idle transactions

[AbhiPrasad]

resolves #8504

If an idle transaction's duration is longer than final timeout + idle timeout, opt to not capture and send it to Sentry.

This should help prevent transactions with durations that don't make sense (too long).

Current issues:

1. this breaks distributed tracing
2. idk how to test it

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	21.95 KB (0%)
@sentry/browser - ES5 CDN Bundle (minified)	69.13 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	20.28 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified)	60.38 KB (0%)
@sentry/browser - Webpack (gzipped + minified)	21.9 KB (0%)
@sentry/browser - Webpack (minified)	71.51 KB (0%)
@sentry/react - Webpack (gzipped + minified)	21.92 KB (0%)
@sentry/nextjs Client - Webpack (gzipped + minified)	50.62 KB (+0.11% 🔺)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	30.15 KB (+0.14% 🔺)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	28.18 KB (+0.16% 🔺)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	49.42 KB (+0.01% 🔺)
@sentry/replay - Webpack (gzipped + minified)	43.1 KB (0%)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	69.54 KB (+0.06% 🔺)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	61.82 KB (0%)