ref(replay): Use SESSION_IDLE_DURATION instead of VISIBILITY_CHANGE_TIMEOUT

[mydea]

Extracted this out of #7253

This allows us to simplify this code a bit (currently we have code paths that handle these being separate etc).

[github-actions]

Replay SDK metrics 🚀

		Plain	+Sentry			+Replay
	Revision	Value	Value	Diff	Ratio	Value	Diff	Ratio
LCP	This PR 67b0684	102.84 ms	141.56 ms	+38.72 ms	+37.65 %	187.59 ms	+84.74 ms	+82.40 %
	Previous 4b95c04	74.67 ms	100.14 ms	+25.47 ms	+34.11 %	132.23 ms	+57.56 ms	+77.09 %
CLS	This PR 67b0684	0.06 ms	0.06 ms	-0.00 ms	-0.69 %	0.06 ms	-0.00 ms	-0.56 %
	Previous 4b95c04	0.06 ms	0.06 ms	-0.00 ms	-0.79 %	0.06 ms	-0.00 ms	-0.47 %
CPU	This PR 67b0684	23.24 %	22.62 %	-0.61 pp	-2.63 %	30.62 %	+7.38 pp	+31.77 %
	Previous 4b95c04	12.32 %	12.48 %	+0.16 pp	+1.28 %	20.27 %	+7.94 pp	+64.46 %
JS heap avg	This PR 67b0684	1.88 MB	2.31 MB	+422.96 kB	+22.45 %	3.59 MB	+1.7 MB	+90.45 %
	Previous 4b95c04	1.94 MB	1.99 MB	+43.74 kB	+2.25 %	2.86 MB	+920.88 kB	+47.38 %
JS heap max	This PR 67b0684	2.29 MB	2.68 MB	+383.72 kB	+16.73 %	4.1 MB	+1.81 MB	+78.88 %
	Previous 4b95c04	2.3 MB	2.55 MB	+249.86 kB	+10.85 %	3.35 MB	+1.05 MB	+45.58 %
netTx	This PR 67b0684	0 B	0 B	0 B	n/a	2.23 kB	+2.23 kB	n/a
	Previous 4b95c04	0 B	0 B	0 B	n/a	2.21 kB	+2.21 kB	n/a
netRx	This PR 67b0684	0 B	0 B	0 B	n/a	41 B	+41 B	n/a
	Previous 4b95c04	0 B	0 B	0 B	n/a	41 B	+41 B	n/a
netCount	This PR 67b0684	0	0	0	n/a	1	+1	n/a
	Previous 4b95c04	0	0	0	n/a	1	+1	n/a
netTime	This PR 67b0684	0.00 ms	0.00 ms	0.00 ms	n/a	85.52 ms	+85.52 ms	n/a
	Previous 4b95c04	0.00 ms	0.00 ms	0.00 ms	n/a	90.32 ms	+90.32 ms	n/a

Previous results on branch: develop

Revision	LCP	CLS	CPU	JS heap avg	JS heap max	netTx	netRx	netCount	netTime
4b95c04	+57.56 ms	-0.00 ms	+7.94 pp	+920.88 kB	+1.05 MB	+2.21 kB	+41 B	+1	+90.32 ms
e60cd02	+56.25 ms	-0.00 ms	+6.32 pp	+927.44 kB	+1.06 MB	+2.21 kB	+41 B	+1	+117.55 ms
e25c067	+48.34 ms	+0.00 ms	+5.59 pp	+926.37 kB	+1.05 MB	+2.22 kB	+41 B	+1	+65.23 ms
b1b249b	+43.88 ms	+0.00 ms	+4.80 pp	+937.99 kB	+1.05 MB	+2.22 kB	+41 B	+1	+111.56 ms
12e34d4	+28.57 ms	+0.00 ms	+5.77 pp	+930.12 kB	+1.04 MB	+2.26 kB	+41 B	+1	+109.67 ms
c46c56c	+65.45 ms	-0.00 ms	+5.38 pp	+930.26 kB	+1.07 MB	+2.21 kB	+41 B	+1	+91.29 ms
7f4c4ec	+56.64 ms	-0.00 ms	+5.57 pp	+927.42 kB	+1.06 MB	+2.21 kB	+41 B	+1	+110.83 ms
00d2360	+55.18 ms	+0.00 ms	+2.23 pp	+934.14 kB	+1.05 MB	+2.22 kB	+41 B	+1	+71.65 ms

---

*) pp - percentage points - an absolute difference between two percentages.
Last updated: Tue, 28 Feb 2023 10:50:28 GMT

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	20.11 KB (+0.01% 🔺)
@sentry/browser - ES5 CDN Bundle (minified)	62.49 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	18.74 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified)	55.5 KB (0%)
@sentry/browser - Webpack (gzipped + minified)	20.48 KB (0%)
@sentry/browser - Webpack (minified)	66.94 KB (0%)
@sentry/react - Webpack (gzipped + minified)	20.51 KB (0%)
@sentry/nextjs Client - Webpack (gzipped + minified)	48.05 KB (0%)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	27.04 KB (+0.01% 🔺)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	25.29 KB (+0.01% 🔺)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	42.86 KB (-0.01% 🔽)
@sentry/replay - Webpack (gzipped + minified)	36.93 KB (-0.03% 🔽)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	60.44 KB (-0.03% 🔽)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	53.99 KB (0%)

[billyvg]

Thanks for separating this out!