[ECO-1564][Coverage] Make package immutable, uncomment inline keyword

[alnoki]

Description

1. Make package immutable
2. Uncomment the inline keyword which was commented out during development,
   such that 100% coverage could be achieved. See
   [Bug][CLI] Coverage testing is broken for inline functions aptos-labs/aptos-core#9154 for more.
3. Re-build docs.

Testing

All tests still pass, but now at 95.94% coverage compared with 100% before uncommenting inline keyword.

From in src/move/emojicoin_dot_fun:

git ls-files | entr -c aptos move test --coverage --dev

Published on testnet under single signer account:
https://explorer.aptoslabs.com/account/0xb11b48d9e8cece3b50a48996704bd1476caa761dfb84de38f9f8d1e136c8fa89/modules/code/emojicoin_dot_fun?network=testnet

Multisig account:
https://explorer.aptoslabs.com/account/0x761e2d91c9e986557b04bdda55b6b8ccf72402ec3b6681504c29f12a55d45e69/modules/code/emojicoin_dot_fun?network=testnet

Checklist

• Did you update relevant documentation (if applicable)?
• Did you add tests to cover new code or a fixed issue (if applicable)?
• Did you update the changelog (if applicable)?
• Did you check all checkboxes from the linked Linear task (if applicable)?

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Name	Status	Preview	Comments	Updated (UTC)
emojicoin-dot-fun	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 19, 2024 4:31am

[alnoki]

• Include in PR squashed commit message a link to [Bug][CLI] Coverage testing is broken for inline functions aptos-labs/aptos-core#9154