ref: Fix outdated comment in SessionTracker

[philipphofmann]

#skip-changelog

Came up in #2150 (comment).

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1215.80 ms	1235.42 ms	19.62 ms
Size	20.75 KiB	374.17 KiB	353.41 KiB

Baseline results on branch: master

Startup times

Revision	Plain	With Sentry	Diff
5025d2e	1248.52 ms	1251.72 ms	3.20 ms
0fdf0b2	1245.88 ms	1247.69 ms	1.82 ms
b15627c	1256.48 ms	1264.68 ms	8.20 ms
604586a	1216.06 ms	1249.10 ms	33.04 ms
db5f62a	1234.47 ms	1257.80 ms	23.33 ms
4e037c4	1205.00 ms	1227.58 ms	22.58 ms
8607e67	1255.80 ms	1259.50 ms	3.70 ms
46deabf	1217.73 ms	1247.30 ms	29.57 ms
0032a5d	1267.35 ms	1282.34 ms	14.99 ms
725723e	1228.47 ms	1255.09 ms	26.62 ms

App size

Revision	Plain	With Sentry	Diff
5025d2e	20.51 KiB	331.79 KiB	311.28 KiB
0fdf0b2	20.51 KiB	332.90 KiB	312.39 KiB
b15627c	20.50 KiB	337.76 KiB	317.25 KiB
604586a	20.51 KiB	333.15 KiB	312.65 KiB
db5f62a	20.51 KiB	333.16 KiB	312.65 KiB
4e037c4	20.50 KiB	361.80 KiB	341.29 KiB
8607e67	20.50 KiB	338.99 KiB	318.49 KiB
46deabf	20.75 KiB	374.16 KiB	353.41 KiB
0032a5d	20.75 KiB	369.27 KiB	348.52 KiB
725723e	20.75 KiB	367.21 KiB	346.46 KiB