docs(BLO-886): remove flashblocks suspension notice

[Copilot]

Flashblocks support has been resumed in production. Removes the temporary suspension notice that was added on May 13th when support was paused during the migration to op-reth instrumented nodes.

Changes

• docs/references/flashblocks.md: Removed the {% hint style="info" %} block stating Flashblocks support was temporarily disabled.

Ref: https://linear.app/streamingfast/issue/BLO-886

Original prompt

<title>Flashblock blocks support is back in production</title> At [https://docs.substreams.dev/reference-material/chain-support/flashblocks](), we added that flashbocks support was suspended, we have now resumed flashblocks support. All tasks related to developer relationship & documentation work for our products (Firehose, Substreams, etc). Fixes https://linear.app/streamingfast/issue/BLO-886

Branch naming

This task relates to issue BLO-886 — preserve that identifier somewhere in the branch name and pull request title for traceability. Do not treat the identifier as a verbatim slug or prepend it with a hyphen by default; instead, adapt the full branch name to comply with the repository's branch-naming pattern, adding any required prefix or restructuring the shape as needed.

Include a link to the original issue in the pull request description: https://linear.app/streamingfast/issue/BLO-886

[sduchesneau]

🔍 Vulnerabilities of ghcr.io/streamingfast/substreams:a67d4ec

📦 Image Reference ghcr.io/streamingfast/substreams:a67d4ec

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