markdown: row indented GFM table rendering idempotency

Prettier v3.9.6
Playground link

--parser markdown

Input:

# NG

| x | y |
        |---|---|

# NG

| x | y |
    |---|---|

# OK

| x | y |
  |---|---|

# OK

| x | y |
|---|---|

Output:

# NG

| x | y |
|---|---|

# NG

| x | y |
|---|---|

# OK

| x   | y   |
| --- | --- |

# OK

| x   | y   |
| --- | --- |

Second Output:

# NG

| x   | y   |
| --- | --- |

# NG

| x   | y   |
| --- | --- |

# OK

| x   | y   |
| --- | --- |

# OK

| x   | y   |
| --- | --- |

Expected output:

Output the 2nd output from the first run.

Why?

Originally reported: oxc-project/oxc#25612

Prettier v3.9.6
Playground link

--parser markdown

Input:

| x | y |
        |---|---|

Output:

| x | y |
|---|---|

Second Output:

| x   | y   |
| --- | --- |

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