Missing WS connection fallback for liveview (#3267)

* Missing WS connection fallback for liveview
- fix for #3250

Remove (conditional WLED_ENABLE_LEGACY) legacy URI

Replace /sliders with /?sliders

* Merge liveview and liveviewws pages

Remove /url string subpage
Enable /json/live by default

* WS retry count
Removed appended ws from URL

* Also reset WS retries on successful WS connection

---------

Co-authored-by: Christian Schwinne <cschwinne@gmail.com>

tools/cdata.js

@@ -390,12 +390,6 @@ const char PAGE_dmxmap[] PROGMEM = R"=====()=====";
       method: "gzip",
       filter: "html-minify",
     },
-    {
-      file: "liveviewws.htm",
-      name: "PAGE_liveviewws",
-      method: "gzip",
-      filter: "html-minify",
-    },
     {
       file: "liveviewws2D.htm",
       name: "PAGE_liveviewws2D",