feat(mobile): disable swipe back gesture when there is no back in header

[CatsJuice]

close AF-1663, AF-1756

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[CatsJuice]

• #8876 👈 (View in Graphite)
• canary

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 33.33333% with 6 lines in your changes missing coverage. Please review.

Project coverage is 70.24%. Comparing base (ad10690) to head (8443371).

Files with missing lines	Patch %	Lines
packages/frontend/component/src/ui/modal/modal.tsx	14.28%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## canary #8876 +/- ## ========================================== - Coverage 70.89% 70.24% -0.66% ========================================== Files 550 551 +1 Lines 34005 34014 +9 Branches 3095 3053 -42 ========================================== - Hits 24109 23892 -217 - Misses 9545 9750 +205 - Partials 351 372 +21 ``` | [Flag](https://app.codecov.io/gh/toeverything/AFFiNE/pull/8876/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=toeverything) | Coverage Δ | | |---|---|---| | [server-test](https://app.codecov.io/gh/toeverything/AFFiNE/pull/8876/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=toeverything) | `77.14% <ø> (-0.70%)` | :arrow_down: | | [unittest](https://app.codecov.io/gh/toeverything/AFFiNE/pull/8876/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=toeverything) | `46.06% <33.33%> (-0.02%)` | :arrow_down: | 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=toeverything#carryforward-flags-in-the-pull-request-comment) to find out more.

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