feat: Nakamoto 3.0 mainnet updates

[He1DAr]

closes #1870

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

• Add a Modal announcement
• Remove Block view 2.5 and leave 3.0 as the only block view the Explorer has
• Rename network label

Things to do before merging:

• Update modal title and content
• Update image nakamoto.png in static folder
• Update link to new blog post
  https://github.com/hirosystems/explorer/blob/78b0eaed7a688eda5f89dac95745a2ed2f682ca5/src/common/components/modals/Nakamoto.tsx
• Do a thorough smoke test

Issue ticket number and link

Checklist:

• I have performed a self-review of my code.
• I have tested the change on desktop and mobile.
• I have added thorough tests where applicable.
• I've added analytics and error logging where applicable.

Screenshots (if appropriate):

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
explorer-storybook	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 18, 2024 7:10pm
hiro-explorer	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 18, 2024 7:10pm

[codecov]

Codecov Report

Attention: Patch coverage is 16.66667% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/common/components/modals/Nakamoto.tsx	0.00%	2 Missing ⚠️
src/app/PageClient.tsx	0.00%	1 Missing ⚠️
src/app/blocks/PageClient.tsx	0.00%	1 Missing ⚠️
src/app/blocks/skeleton.tsx	0.00%	1 Missing ⚠️

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