Update transaction-related content

[alexandratran]

Description

Update content relating to the transaction object, types, and parameters:

• Update Services > Concepts > Ethereum transaction types with example transaction object/params for each type. (preview)
• Update Wallet API > How to > Send transactions: (preview)
  • Add example transaction object/params for each type.
  • Simplify comments on example implementation.
  • Fix outdated information for the parameter descriptions, and add 1559 parameters.
• Add reference to transaction parameters in Snaps docs:
  • onTransaction entry point (preview)
  • Transaction insights guide (preview)
  • Gas fee percentages tutorial (preview)

Issue(s) fixed

Fixes #832

Checklist

Complete this checklist before merging your PR:

• If this PR contains a major change to the documentation content, I have added an entry to the top of the "What's new?" page.
• The proposed changes have been reviewed and approved by a member of the documentation team.

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Name	Status	Preview	Comments	Updated (UTC)
metamask-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 16, 2025 10:09pm

[bgravenorst]

lgtm