fix: increase gas limit validation threshold (#29264)

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## **Description**

This PR aims to increase the gas limit validation threshold to 30M.


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## **Related issues**

Fixes: #21927

## **Manual testing steps**

1. send a transaction
2. edit gaslimit on advance tab

## **Screenshots/Recordings**

[Screencast from 17-12-2024
08:51:19.webm](https://github.com/user-attachments/assets/a8ff1e67-681f-4d6f-9dd8-b0ff79d86baa)

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### **Before**

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### **After**

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## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
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Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

Author: vinistevam

ui/pages/confirmations/components/advanced-gas-fee-popover/advanced-gas-fee-gas-limit/advanced-gas-fee-gas-limit.test.js

@@ -101,7 +101,7 @@ describe('AdvancedGasFeeGasLimit', () => {
       ),
     ).toBeInTheDocument();
     fireEvent.change(document.getElementsByTagName('input')[0], {
-      target: { value: 8000000 },
+      target: { value: 80000000 },
     });
     expect(
       screen.queryByText(
@@ -154,7 +154,7 @@ describe('AdvancedGasFeeGasLimit', () => {
     );
     expect(
       screen.queryByText(
-        `Gas limit must be greater than 29999 and less than 7920050`,
+        `Gas limit must be greater than 29999 and less than 30000000`,
       ),
     ).toBeInTheDocument();
   });

ui/pages/confirmations/send/send.constants.js

@@ -5,7 +5,7 @@ import { EtherDenomination } from '../../../../shared/constants/common';
 const MIN_GAS_PRICE_DEC = '0';
 const MIN_GAS_PRICE_HEX = parseInt(MIN_GAS_PRICE_DEC, 10).toString(16);
 const MIN_GAS_LIMIT_DEC = new Numeric('21000', 10);
-const MAX_GAS_LIMIT_DEC = '7920027';
+const MAX_GAS_LIMIT_DEC = '30000000';
 
 const HIGH_FEE_WARNING_MULTIPLIER = 1.5;
 const MIN_GAS_PRICE_GWEI = new Numeric(