in markdown renderer: make priority of code or math quotation to be grater than of table separator

### steps to reproduce:
insert next text
```
| `\bigg|_1^2` | $\bigg|_1^2$ |
| ------ | ----- |
| | |
```
### expected behavior:
rendered table with fields `\bigg|_1^2` and $\bigg|_1^2$

### actual behavior:
It continues to be displayed as inserted text
| `\bigg|_1^2` | $\bigg|_1^2$ |
| ------ | ----- |
| | |

If I insert next text:
```
| `\bigg|_1^2` |
| ------ | ----- |
| | |
```
I get:
| `\bigg|_1^2` |
| ------ | ----- |
| | |