chore: Making Hybrid SDK only header private for everybody else

[brustolin]

Exposing some headers to hybridSDK only.
closes #2452

#skip-changelog

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1251.20 ms	1276.46 ms	25.26 ms
Size	20.75 KiB	383.38 KiB	362.63 KiB

Baseline results on branch: 8.0.0

Startup times

Revision	Plain	With Sentry	Diff
e2cec76	1189.48 ms	1229.84 ms	40.36 ms
68094b3	1214.14 ms	1255.09 ms	40.95 ms
9f8d429	1239.57 ms	1255.12 ms	15.55 ms
9cb6c52	1201.08 ms	1211.37 ms	10.29 ms
3fdb749	1227.42 ms	1248.48 ms	21.06 ms
c9129b6	1231.86 ms	1270.11 ms	38.25 ms
d10145a	1232.65 ms	1257.55 ms	24.90 ms
1ce879f	1258.12 ms	1260.90 ms	2.78 ms
909e73a	1217.78 ms	1229.70 ms	11.92 ms
dcac8ad	1238.82 ms	1247.80 ms	8.98 ms

App size

Revision	Plain	With Sentry	Diff
e2cec76	20.75 KiB	381.81 KiB	361.06 KiB
68094b3	20.75 KiB	373.94 KiB	353.19 KiB
9f8d429	20.75 KiB	383.40 KiB	362.65 KiB
9cb6c52	20.75 KiB	382.12 KiB	361.36 KiB
3fdb749	20.75 KiB	383.81 KiB	363.06 KiB
c9129b6	20.75 KiB	381.81 KiB	361.06 KiB
d10145a	20.75 KiB	379.12 KiB	358.36 KiB
1ce879f	20.75 KiB	381.81 KiB	361.06 KiB
909e73a	20.75 KiB	383.40 KiB	362.65 KiB
dcac8ad	20.75 KiB	379.11 KiB	358.36 KiB

[philipphofmann]

Thanks 🙏