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## **Description**
Previously, if the Max base fee and Priority fee were reduced to very
low values, the Network fee wouldn't update accordingly. This is a
discrepancy with the gas calculations in the old flows.
What fixes it is, for low enough values of `maxFeePerGas` (low enough to
be lower than `minimumFeePerGas`), the Network fee becomes the Max fee
-- `maxFeePerGas` times `gasLimit` directly. Apart from fixing the
symptom explained above, this ensures that the Network fee is never
higher than the Max fee.
The PR also fixes this calculation when it comes to the L2 fees (inside
`useTransactionGasFeeEstimate`).
It also adds a missing override of `dappSuggestedFees` for both
`maxFeePerGas` and `maxPriorityFeePerGas` (inside `useEIP1559TxFees`).
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## **Related issues**
Fixes: #27802
## **Manual testing steps**
See original report above.
## **Screenshots/Recordings**
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### **Before**
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### **After**
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## **Pre-merge author checklist**
- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I’ve included tests if applicable
- [ ] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/LABELING_GUIDELINES.md)).
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.