`$$`-math with indentation doesn't work
MWE:
```markdown
Indent 0:
$\alpha$
$$
\alpha
$$
Indent 1:
$\alpha$
$$
\alpha
$$
Indent 2:
$\alpha$
$$
\alpha
$$
Indent 3:
$\alpha$
$$
\alpha
$$
```
Output:
---
Indent 0:
$\alpha$
$$
\alpha
$$
Indent 1:
$\alpha$
$$
\alpha
$$
Indent 2:
$\alpha$
$$
\alpha
$$
Indent 3:
$\alpha$
$$
\alpha
$$
---
Screenshot (Nov 15, 2023):
It appears to work with backticked math:
```math
\alpha
```
issue