Fix incorrect `escape.element` test

[dkorpel]

Blocking https://github.com/dlang/dmd/pull/14871

There's no transitive scope, the return scope opIndex() method on a scope struct Vector protects pointers into the underlying scope E[] _elements;, but not the pointer values of the array elements themselves.

[codecov[bot]]

Codecov Report

Base: 98.58% // Head: 98.58% // Decreases project coverage by -0.01% :warning:

Coverage data is based on head (ba70a01) compared to base (e418d37). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #72 +/- ## ========================================== - Coverage 98.58% 98.58% -0.01% ========================================== Files 12 12 Lines 851 850 -1 ========================================== - Hits 839 838 -1 Misses 12 12 ``` | [Impacted Files](https://codecov.io/gh/atilaneves/automem/pull/72?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Atila+Neves) | Coverage Δ | | |---|---|---| | [tests/ut/vector.d](https://codecov.io/gh/atilaneves/automem/pull/72?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Atila+Neves#diff-dGVzdHMvdXQvdmVjdG9yLmQ=) | `99.22% <100.00%> (-0.01%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Atila+Neves). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Atila+Neves)

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[dkorpel]

Ping @atilaneves

[dkorpel]

@atilaneves Can you add a new tag? Buildkite is still checking out v0.6.8

[atilaneves]

Done.