Tax missing on recurring orders

[dwanjuki]

Describe the bug
When using the pmpro_tax filter, the tax amount is added to the Initial Payment only. Recurring order totals for the subscription do not include tax.

To Reproduce
Steps to reproduce the behavior:

1. Use pmpro_tax to create a custom tax structure, or use one of our existing tax snippets, e.g. this one for GST
2. Create a daily membership level
3. Check out for the level, pay via check.
4. Wait for pending check order to be generated or trigger the PBC recurring order cron
5. Observe that the recurring order total does not include tax.

Expected behavior
The PBC recurring payment amount includes tax in the total similarly to other gateways.

Isolating the problem (mark completed items with an [x]):

• I have deactivated other plugins and confirmed this bug occurs when only Paid Memberships Pro plugin is active.
• This bug happens with a default WordPress theme active, or Memberlite.
• I can reproduce this bug consistently using the steps above.

WordPress Environment

``` WP 6.7.1 PBC 1.1.2 PMPro 3.3.3 ```