We "guess" the type in this case, consistent with what a SoapVar would
do outside of an array.

Closes GH-20030.

* PHP-8.3:
  Fix GH-20011: Array of SoapVar of unknown type causes crash

* PHP-8.4:
  Fix GH-20011: Array of SoapVar of unknown type causes crash

* PHP-8.5:
  Fix GH-20011: Array of SoapVar of unknown type causes crash

…0016)

* Reduce code bloat in arginfo by using specialised string releases

Comparing this patch to master (c7da728),
with a plain configure command without any options:

```
   text	   data	    bss	    dec	    hex	filename
20683738	1592400	 137712	22413850	156021a	sapi/cli/php
20688522	1592400	 137712	22418634	15614ca	sapi/cli/php_old
```

We see a minor reduction of 0.023% in code size.

* Also use true for the other initialization line

* Also use specialized code for consts