Adding comments in function.json file causes encoding issues.

#### Check for a solution in the Azure portal
For issues in production, please check for a solution to common issues in the Azure portal before opening a bug. In the Azure portal, navigate to your function app, select `Diagnose and solve problems` from the left, and view relevant dashboards before opening your issue.

#### Investigative information

Please provide the following:

- Timestamp: 2023-12-14 02:13:22PST
- Function App version: NA
- Function App name: pnevmcninffunapp101
- Function name(s) (as appropriate): NA
- Invocation ID: NA
- Region: Global

There is an internal CRI for the same - 450609333

#### Repro steps

Provide the steps required to reproduce the problem:

Go to a function app on the portal with a function in it. Edit the function.json file to add a "comment", save and refresh. The API call then fails with encoding issue.

#### Expected behavior

You should be able to add a comment successfully and fetch the file again after saving.

#### Actual behavior

Unable to load the function as the API call fails due to encoding issue.

#### Known workarounds

Provide a description of any known workarounds.

#### Related information

Provide any related information

* Programming language used
* Links to source
* Bindings used

Start by reproducing the issue in the Azure portal: add a comment to a function.json file, save it, refresh, and observe the API encoding failure. Compare the saved file with the fetched file; the issue is done when comments can be saved and the function.json file can be fetched successfully afterward.

Written by the indexing model from the issue text.