Browser type errors

[longchuan]

Cocos Creator version

3.8.4

System information

windows 11,edge

Issue description

The useragent of windows edge.And there were many errors in mobile too.
And the Huawei Browser will not be exec because of the toLowerCase

Relevant error log output

No response

Steps to reproduce

console.log(sys.browserType);
console.log(sys.browserVersion);
console.log(navigator.userAgent);

Minimal reproduction project

No response

[longchuan]

Perhaps,slice the useragent to 1/2,and exec the "edg" will be more faster.
Maybe,the old edge's useragent was "edge"
Perhaps,cocos engine should let developers to select the supported browser.

[longchuan]

And,cancel the method of "toLowerCase",that will be more faster.The useragent will not be change in a long time.

[longchuan]

Perhaps,slice the useragent to 1/2,and exec the "edg" will be more faster.

such as:

if(useragent.length>12){
     useragent = useragent.slice(useragent.length/2,useragent.length);
}

calculate the time of "if" and the time of slice,this will solve many problems about what causes project a slow one.
and put the more time used part to init.
For the end,let developers to load them in init.
Cocos' init was not necessary.