Add encaps var flags for AST_DIM/AST_VAR for php 8.2 (#227)

For https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation

Closes #224

In util.php: Don't print a

Add encaps var flags for AST_DIM/AST_VAR for php 8.2 (#227)

For https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation

Closes #224

In util.php: Don't print a 0 flag value for combinable flags

For php-ast self-testing, minimize the number of changes in the future
when similar combinable flags get added to existing ast var types.

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Fix redundant call to ast_to_zval (#230)

I noticed in 1.1.0dev that the __declId did not match a polyfill
when short arrow functions were nested.
ast_to_zval was already being called

Fix redundant call to ast_to_zval (#230)

I noticed in 1.1.0dev that the __declId did not match a polyfill
when short arrow functions were nested.
ast_to_zval was already being called on the above lines in ast.c,
calling it again would create `ast\Node` instances again.

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