settings_leds: Init current limiter

Supersedes previous approach; this should use less space and be more robust to future changes.

wled00/data/settings_leds.htm

@@ -422,7 +422,7 @@
 <option value="15">15mA (seed/fairy pixels)</option>
 <option value="0">Custom</option>
 </select><br>
-<div id="LAdis${s}" style="display: none;">max. mA/LED: <input name="LA${s}" type="number" min="1" max="255" oninput="UI()" value="55"> mA<br></div>
+<div id="LAdis${s}" style="display: none;">max. mA/LED: <input name="LA${s}" type="number" min="1" max="255" oninput="UI()"> mA<br></div>
 <div id="PSU${s}">PSU: <input name="MA${s}" type="number" class="xl" min="250" max="65000" oninput="UI()" value="250"> mA<br></div>
 </div>
 <div id="co${s}" style="display:inline">Color Order:
@@ -471,6 +471,8 @@
 				if (i >= maxB || twopinB >= 1)     disable(sel,'option[data-type="2P"]'); // NOTE: see isD2P()
 				disable(sel,`option[data-type^="${'A'.repeat(maxA-analogB+1)}"]`); // NOTE: see isPWM()
 				sel.selectedIndex = sel.querySelector('option:not(:disabled)').index;
+			    // initialize current limiter
+				enLA(d.Sf["LAsel"+s],s);
 			}
 			if (n==-1) {
 				o[--i].remove();--i;