Adjustments to default template file

[SchrodingersGat]

• Do not specify SAMESITE_COOKIE options by default
• Fallback to the values in settings.py
• Ref https://github.com/inventree/InvenTree/issues/8439

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.42%. Comparing base (c062d5e) to head (7316eab). Report is 2 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #8440 +/- ## ======================================= Coverage 84.42% 84.42% ======================================= Files 1170 1170 Lines 53468 53468 Branches 2005 2005 ======================================= Hits 45143 45143 Misses 7804 7804 Partials 521 521 ``` | [Flag](https://app.codecov.io/gh/inventree/InvenTree/pull/8440/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=inventree) | Coverage Δ | | |---|---|---| | [backend](https://app.codecov.io/gh/inventree/InvenTree/pull/8440/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=inventree) | `85.91% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=inventree#carryforward-flags-in-the-pull-request-comment) to find out more.

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