Update useScaffoldEventHistory hook

[rin-st]

Description

1. Moved readEvents to useCallback, so it's clear which dependencies it has
2. Since fromBlock is required prop, removed if's like if (fromBlock)
3. Combined two useEffects with the same functionality readEvents(); and

if (!deployedContractLoading) {
    readEvents();
}

The one without if (!deployedContractLoading) was buggy - on load it threw errors to the console
4. Changed default state of events to [], so we don't guess is it array or undefined

Additional Information

• I have read the contributing docs (if this is your first contribution)
• This is not a duplicate of any existing pull request

[damianmarti]

Works well and the code looks good to me, I only left a small comment.

Thanks!!

[Pabl0cks]

Good job @rin-st!!

Tested it nicely and only found a problem when you pass enabled: false.

• In the old version you would get 1 Error: Hook disabled everytime it fires the hook (watch: true)
• In the new version, it keeps spamming the error in the console.

Rest worked great! 🙌

[Pabl0cks]

Fix working great! Thanks for the quick fix! 🙌

[rin-st]

Thanks! Merging this