Fix Header not found timestamp field

[yoozo]

Description

When using historical: timestamp, because getHeader does not return the timestamp, it causes the crawl to not function properly.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• I have tested locally
• I have performed a self review of my changes
• Updated any relevant documentation
• Linked to any relevant issues
• I have added tests relevant to my changes
• Any dependent changes have been merged and published in downstream modules
• My code is up to date with the base branch
• I have updated relevant changelogs. We suggest using chan

[github-actions]

Coverage report

Caution

Test run failed

St.❔	Category	Percentage	Covered / Total
🔴	Statements	52.39%	3293/6285
🟡	Branches	69.92%	423/605
🔴	Functions	50.35%	142/282
🔴	Lines	52.39%	3293/6285

Test suite run failed

Failed tests: 5/96. Failed suites: 3/14.

  ● UnfinalizedBlockService › startup, correctly checks for forks after cached unfinalized blocks

    expect(jest.fn()).toHaveBeenCalledWith(...expected)

    - Expected
    + Received

      Object {
        "blockHash": "0x00ABC99f",
        "blockHeight": 99,
        "parentHash": "0x00ABC98f",
    -   "timestamp": 2025-02-21T01:08:19.000Z,
    +   "timestamp": "2025-02-21T01:08:19.000Z",
      },

    Number of calls: 1

      168 |
      169 |     // It should fall back to poi in this case
    > 170 |     expect(rewind).toHaveBeenCalledWith({
          |                    ^
      171 |       blockHash: '0x00ABC99f',
      172 |       blockHeight: 99,
      173 |       parentHash: '0x00ABC98f',

      at Object.<anonymous> (packages/node/src/indexer/unfinalizedBlocks.service.spec.ts:170:20)

---

  ● eth dictionary v2 › query response match with entries

    Dictionary query failed Error: method handler crashed

      146 |
      147 |   it('query response match with entries', async () => {
    > 148 |     const ethBlocks = (await ethDictionaryV2.getData(
          |                        ^
      149 |       19217803,
      150 |       (ethDictionaryV2 as any)._metadata.end,
      151 |       2,

      at EthDictionaryV2.getData (node_modules/@subql/node-core/src/indexer/dictionary/v2/dictionaryV2.ts:162:13)
      at Object.<anonymous> (packages/node/src/indexer/dictionary/v2/ethDictionaryV2.spec.ts:148:24)

  ● eth dictionary v2 › is able to query with not null topics

    Dictionary query failed Error: method handler crashed

      264 |     });
      265 |
    > 266 |     const ethBlocks = (await ethDictionaryV2.getData(
          |                        ^
      267 |       19476187,
      268 |       (ethDictionaryV2 as any)._metadata.end,
      269 |       2,

      at EthDictionaryV2.getData (node_modules/@subql/node-core/src/indexer/dictionary/v2/dictionaryV2.ts:162:13)
      at Object.<anonymous> (packages/node/src/indexer/dictionary/v2/ethDictionaryV2.spec.ts:266:24)

---

  ● rawBlockToEthBlock › successfully converts a block

    TypeError: Cannot read properties of undefined (reading 'blocks')

      52 |   });
      53 |
    > 54 |   return (await res.json()).result.blocks[0];
         |                                    ^
      55 | }
      56 |
      57 | describe('rawBlockToEthBlock', () => {

      at fetchDictionaryBlock (packages/node/src/indexer/dictionary/v2/utils.spec.ts:54:36)
          at async Promise.all (index 0)
      at Object.<anonymous> (packages/node/src/indexer/dictionary/v2/utils.spec.ts:63:23)

  ● rawBlockToEthBlock › can fetch receipts

    TypeError: Cannot read properties of undefined (reading 'blocks')

      52 |   });
      53 |
    > 54 |   return (await res.json()).result.blocks[0];
         |                                    ^
      55 | }
      56 |
      57 | describe('rawBlockToEthBlock', () => {

      at fetchDictionaryBlock (packages/node/src/indexer/dictionary/v2/utils.spec.ts:54:36)
          at async Promise.all (index 0)
      at Object.<anonymous> (packages/node/src/indexer/dictionary/v2/utils.spec.ts:63:23)

Report generated by 🧪jest coverage report action from d0dfd06

[stwiname]

Suggested change

	- Fix `Header` not found `timestamp` field
	- `timestamp` field missing on `Header`

[stwiname]

Where does 1740100000 come from? Can we move it to a constant with a description