[No QA] Docs updates for E/A#93185 Rules page tabbed layout and General tab

[MelvinBot]

Docs updates for #93185

This draft updates the Workspace Rules help article to reflect the revamped, tabbed Rules page introduced in #93185.

What changed in the app

#93185 ("[Rules Revamp R1] Add tabbed Rules page layout and restructure General tab") reorganizes the workspace Rules page into three tabs and renames the rows on the General tab:

• The Rules page is now split into General, Card restrictions, and Expense defaults tabs.
• An Add rule button (with a + icon) opens a chooser with Restrict card spend and Apply expense defaults.
• General tab rows are renamed/restructured:
  • "Max expense age" → Flag expenses older than
  • "Max expense amount" → Flag expenses above amount
  • "Prohibited expenses" → Flag receipt line items
  • New Require receipts (combines regular + itemized receipt requirements)
  • New Require fields for all expenses
  • "Cash expense default" → Cash expenses; "Billable default" → Billable expenses

What this PR does

• Rewrites the How to configure Expense Rules section of Workspace-Rules.md to describe the three tabs and the new General tab row labels, verified against the merged English copy in src/languages/en.ts.

⚠️ Important: do not merge until GA

This change is gated behind the rulesRevamp beta and is R1 of a phased rollout. With the beta off, users still see the legacy (non-tabbed) Rules page that the current article describes. This draft should not be merged or published until the Rules Revamp reaches general availability, and it may need follow-up updates as later revamp releases (R2+) land.

Notes

• Labels were verified against src/languages/en.ts (the source of truth for this beta feature) rather than the live UI, since the feature is beta-gated and not yet generally available.
• The article uses multiple # headings throughout (a pre-existing pattern that doesn't follow the current single-# authoring guideline). To keep the diff scoped to this change, the surrounding structure was left as-is.

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@Krishna2323, please review the files changed and confirm they reflect the current behavior. Then mark this PR Ready for review.

[OSBotify]

A preview of your ExpensifyHelp changes have been deployed to https://98d4356c.helpdot.pages.dev ⚡️

Updated articles:

• articles/new-expensify/workspaces/Workspace-Rules