Ensure single instance of "actions"

[izri16]

• see Memoized useActions #938

• even after changes in the above PR, the useActions hook produce new actions for each component where it is used

Instead:
-> using the single "Store" instance we have (see walletApp component) initialize actions object that all components can just import (either via hook or just via standard import)
-> investigate if it does not lead to some problems or the approach is not dead-end