prefixIds does not apply prefix in non-trivial begin/end expressions of animate tag

[alex-kowalczyk]

Describe the bug
Seems that #848 is fixed only partially, for simple expressions - the fixing commit splits by '; ' and checks for .end presence via endsWith() , and follow-up changes drag that limitation too:
https://github.com/svg/svgo/blame/main/plugins/prefixIds.js#L253

For the following example, being a fragment of animation of rain drops, coming from https://github.com/basmilius/weather-icons (partly-cloudy-day-rain.svg):

<animate id="y1" attributeName="opacity" begin="0s; y1.end+.33s" dur=".67s" keyTimes="0; .25; 1" values="0; 1; 0"/>

the result is:

<animate id="partly-cloudy-day-rain_svg__j" attributeName="opacity" begin="0s; j.end+.33s" dur=".67s" keyTimes="0; .25; 1" values="0; 1; 0"></animate>

To Reproduce
Steps to reproduce the behavior:

Expected behavior

<animate id="partly-cloudy-day-rain_svg__j" attributeName="opacity" begin="0s; partly-cloudy-day-rain_svg__j.end+.33s" dur=".67s" keyTimes="0; .25; 1" values="0; 1; 0"></animate>

Desktop (please complete the following information):

• SVGO Version: 3.3.2
• NodeJs Version: 20
• OS: Linux