revert: Rename of User to SentryUser

[brustolin]

Reverted renaming of User to SentryUser

#skip-changelog

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1205.42 ms	1244.42 ms	39.00 ms
Size	20.75 KiB	383.40 KiB	362.65 KiB

Baseline results on branch: 8.0.0

Startup times

Revision	Plain	With Sentry	Diff
68094b3	1214.14 ms	1255.09 ms	40.95 ms
909e73a	1217.78 ms	1229.70 ms	11.92 ms
1ce879f	1258.12 ms	1260.90 ms	2.78 ms
dcac8ad	1238.82 ms	1247.80 ms	8.98 ms
7eee302	1228.73 ms	1241.94 ms	13.21 ms
c9129b6	1231.86 ms	1270.11 ms	38.25 ms
3fdb749	1227.42 ms	1248.48 ms	21.06 ms
d10145a	1232.65 ms	1257.55 ms	24.90 ms
e2cec76	1189.48 ms	1229.84 ms	40.36 ms
cdf9acd	1219.62 ms	1254.80 ms	35.18 ms

App size

Revision	Plain	With Sentry	Diff
68094b3	20.75 KiB	373.94 KiB	353.19 KiB
909e73a	20.75 KiB	383.40 KiB	362.65 KiB
1ce879f	20.75 KiB	381.81 KiB	361.06 KiB
dcac8ad	20.75 KiB	379.11 KiB	358.36 KiB
7eee302	20.75 KiB	374.73 KiB	353.97 KiB
c9129b6	20.75 KiB	381.81 KiB	361.06 KiB
3fdb749	20.75 KiB	383.81 KiB	363.06 KiB
d10145a	20.75 KiB	379.12 KiB	358.36 KiB
e2cec76	20.75 KiB	381.81 KiB	361.06 KiB
cdf9acd	20.75 KiB	383.78 KiB	363.03 KiB

[philipphofmann]

Thanks. 🙏