Improve test coverage for TLS resume

[wfurt]

fix for #75079 did not have test as I was unable to construct one.
But in general, most tests do verify given behavior once but that may not be sufficient.
The behavior may change because of

• session cache (primarily windows)
• TLS resume (primarily Linux)

we should add test for #75079 as well as improve test coverage in general.

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Issue Details

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fix for #75079 did not have test as I was unable to construct one.
But in general, most tests do verify given behavior once but that may not be sufficient.
The behavior may change because of

• session cache (primarily windows)
• TLS resume (primarily Linux)

we should add test for #75079 as well as improve test coverage in general.

Author:	wfurt
Assignees:	-
Labels:	area-System.Net.Security
Milestone:	-