feat: use all current identities for strategy test state transitions

[pauldelucia]

Issue being fixed or feature implemented

We were just using the first identity in current_identities for some operations

What was done?

Select a random identity from current identities instead.

How Has This Been Tested?

Platform TUI

Breaking Changes

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
• I have made corresponding changes to the documentation if needed

For repository code-owners and collaborators only

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