Due Date in Fee Estimate Payment Email Incorrect

**Describe the bug in current situation**
On FOR-2023-31888, the due date on the fee estimate payment email is not matching the LDD in FOI Mod.

The posted comment _**incorrectly**_ states:

In addition, the email sent to the applicant _**incorrectly**_ indicated the due date is 08/12/2024

However, the LDD on the request (which is correct) is the following:

This led to the applicant being sent a letter with an incorrect due date. The due date on the letter should have matched the LDD. The analyst has since emailed the applicant with the correction, but this needs investigation.

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**Impact of this bug**
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**Chance of Occurring (high/medium/low/very low)**

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**Actual/ observed behaviour/ results**

**Expected behaviour**
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The payload names no files, tests, or entry points. Start by tracing how the fee estimate payment email obtains its due date and compare that source with the request's LDD; done means the applicant email and letter use the correct LDD.

Written by the indexing model from the issue text.