wt split-pane -D overwrites command line command with profile command

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### Windows Terminal version

1.20.11381.0

### Windows build number

10.0.19045.0

### Other Software

_No response_

### Steps to reproduce

Hello,

I made a function that is called to open 6 panes under Windows Terminal and which will connect automatically to several hosts.
I've done it thiw way because I was not able to find on the documentation a cleaner way.

This script is working but I've found that the command split-pane :
* With the parameter -H the following command is executed
* With the parameter -D the following command **isn't** executed

**Working** 👍
```
wt.exe --maximized -p NoProfile pwsh -wd ~ -nop -noexit -command "connect $($Hosts[0])" ; split-pane -s .33 pwsh -nop -noexit -command "connect $($Hosts[2])" -D
wt.exe --maximized -p NoProfile pwsh -wd ~ -nop -noexit -command "connect $($Hosts[0])" ; split-pane -s .33 -H pwsh -nop -noexit -command "connect $($Hosts[2])
```

**Not working** 👎
```
wt.exe --maximized -p NoProfile pwsh -wd ~ -nop -noexit -command "connect $($Hosts[0])" ; split-pane -s .33 -D pwsh -nop -noexit -command "connect $($Hosts[2])
```

My workaround like posted here is to move the parameter -D at the end of the command, this way it works.

```
if ($null -ne $Hosts) {
# Open 6 panes with 6 servers
wt.exe --maximized -p NoProfile pwsh -wd ~ -nop -noexit -command "connect $($Hosts[0])" `; `
split-pane -s .33 pwsh -nop -noexit -command "connect $($Hosts[2])" -D `; move-focus first `; split-pane -s .5 pwsh -wd ~ -nop -noexit -command "connect $($Hosts[1])" -D `; `
split-pane -s .5 -H pwsh -wd ~ -nop -noexit -command "connect $($Hosts[4])" `; move-focus left `; split-pane -s .5 -H pwsh -wd ~ -nop -noexit -command "connect $($Hosts[3])" `; move-focus right `; move-focus right `; split-pane --tabColor `#f59218 --title 'DBAPatching' -s .5 -H pwsh -wd ~ -nop -noexit -command "connect $($Hosts[5])"
}
```

### Expected Behavior

I would like to be able to use the same positional argument -D or -H on the same spot or at least have indication on the reference doc about this.

### Actual Behavior

When using -H then command -> command executed
When using -D then command -> command not executed

Start by reproducing the reported commands through the wt.exe entry point, comparing split-pane with -H and -D in the same position. Trace how each option is parsed and verify that the command after -D is executed consistently, or that the reference documentation clearly describes the positional behavior.

Written by the indexing model from the issue text.