Adjust tests to work on 32-bit

Fixes #662.

Fix parsing of large hex floats containing "e"

These ended up taking the code path for normal floats and being
cast to zero.

Add some unit tests for PhpVersion

Bail out on PHP tags in removed code

If dropping a node would drop PHP tags, bail out of formatting
preservation. This will lose formatting, but at least produce
legal code.

Bail out on PHP tags in removed code

If dropping a node would drop PHP tags, bail out of formatting
preservation. This will lose formatting, but at least produce
legal code.

Closes GH-884.

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Add more tests for formatting preservation with InlineHTML

It's all broken...

Add support for perserving formatting for static modifier change

Closes GH-891.

Show missing format preservation when adding static modifier to closure

Test PHP 8.2 in CI

Support readonly before DNF type

This makes us match the PHP 8.2 handling of readonly. Handling of
"readonly" functions is moved to the parser to allow distinguishing
them from reado

Support readonly before DNF type

This makes us match the PHP 8.2 handling of readonly. Handling of
"readonly" functions is moved to the parser to allow distinguishing
them from readonly properties with DNF types. We have to uglify the
grammar to avoid some shift/reduce conflicts. Thank you WordPress.

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Slightly more precise type

Bail out on list insertion of non-Node

PhpStan correctly detected that this is not supported. We could
add support for it, but for now just make sure it doesn't crash.

Fix some types

Use PhpStan level 6

New baseline errors are array types that I prefer to leave alone,
as well as one PhpStan bug:
https://github.com/phpstan/phpstan/issues/4526

Specify more types

Specify more types

Remove deprecated Error constructor

And use this chance to provide accurate position information for
namespace errors.

Specify some more types

Use array<string, mixed> type for $attributes

Slightly more accurate, and stops PHPStan from complaining about
the missing array type information.

Support adding class constants in trait builder

These are allowed as of PHP 8.2.

Add some missing property types

Add missing return types

Add return types to PrettyPrinter\Standard

Fix formatting preservation for alternative elseif/else syntax

Test taken from PR #797.

Add isPublic() etc methods on Param node

Also isPromoted() to check for any flags.

Move verifyModifier/verifyClassModifier to Modifiers class

Now that the Modifiers are in a separate class, these *internal*
verification methods should also be moved there.