Add blockTag to observerId to avoid id collisions

[youPickItUp]

While using wagmi I notice that both of my useWatchBlocks hooks provide latest blocks even though one was suppose to subscribe to finalized blocks.

  useWatchBlocks({
    blockTag: 'latest',
    emitOnBegin: true,
    onBlock(block) {
      console.log('latest', { block })
    },
  });

  useWatchBlocks({
    blockTag: 'finalized',
    emitOnBegin: true,
    onBlock(block) {
      console.log('finalized', { block })
    },
  });

It seems there is observerId collision. Fix includes blockTag in the observerId to make it unique.

---

PR-Codex overview

This PR focuses on adding blockTag to observerId in watchBlocks to prevent id collisions.

Detailed summary

• Added blockTag parameter to watchBlocks function
• Updated observerId to include blockTag to avoid id collisions

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Latest commit: fa39e03

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