T17002 volt escape sequence

[niden]

Hello!

• Type: bug fix
• Link to issue: volt strings do not know about escape sequences #17002

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Fixed Phalcon\Mvc\View\Engine\Volt\Compiler rejecting single-quoted Volt string literals containing an escaped single quote (e.g. {{ 'Let\'s Encrypt' }}) with a downstream PHP T_STRING parse error; the Volt scanner already preserves the user-written \' verbatim in expr["value"], so the compiler's str_replace("'", "\\'", expr["value"]) step double-escaped it into Let\\'s Encrypt, producing PHP source 'Let\\'s Encrypt' that PHP read as Let\ followed by an unexpected identifier. Dropped the redundant str_replace; the scanner's regex ((['] ([\\][']|[\\].|...) ['])) guarantees expr["value"] is already valid PHP single-quoted string content

Thanks