ref(core): Remove check for scope in _sendSessionUpdate

[AbhiPrasad]

With the changes in #7551, this is no longer required. Let's save some bytes!

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	20.66 KB (+0.22% 🔺)
@sentry/browser - ES5 CDN Bundle (minified)	64.52 KB (+0.2% 🔺)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	19.2 KB (+0.23% 🔺)
@sentry/browser - ES6 CDN Bundle (minified)	56.89 KB (+0.21% 🔺)
@sentry/browser - Webpack (gzipped + minified)	21.57 KB (+0.15% 🔺)
@sentry/browser - Webpack (minified)	72.11 KB (+0.16% 🔺)
@sentry/react - Webpack (gzipped + minified)	21.59 KB (+0.18% 🔺)
@sentry/nextjs Client - Webpack (gzipped + minified)	52.09 KB (+0.07% 🔺)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	28.26 KB (+0.17% 🔺)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	26.45 KB (+0.17% 🔺)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	44.78 KB (+0.09% 🔺)
@sentry/replay - Webpack (gzipped + minified)	38.86 KB (0%)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	63.5 KB (+0.07% 🔺)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	56.53 KB (+0.07% 🔺)

[AbhiPrasad]

this doesn't seem right size bot 🤔

[Lms24]

this doesn't seem right size bot 🤔

i think size bot is off a lot lately...