some more 516 compat fixes (#89766)

Ports the helpers from
https://github.com/BeeStation/BeeStation-Hornet/pull/12240

This should fix some more of the 516 issues that I've seen while giving
a quick check through the code

The remaining browse should work now.

Also fixing another sass warning while being on it.

## About The Pull Request
## Why It's Good For The Game
## Changelog
🆑
fix: tgui say 516 will no longer change channels when the button is used
to drag it
fix: tgui say 516 will no longer leak radio messages into the wrong
channel
fix: runechat flickering when faded up messages fade out
/🆑

code/modules/admin/verbs/SDQL2/SDQL_2.dm

@@ -533,7 +533,7 @@ GLOBAL_DATUM_INIT(sdql2_vv_statobj, /obj/effect/statclick/sdql2_vv_all, new(null
 			if(length(select_text))
 				var/text = islist(select_text)? select_text.Join() : select_text
 				var/static/result_offset = 0
-				showmob << browse(text, "window=SDQL-result-[result_offset++]")
+				showmob << browse(HTML_SKELETON(text), "window=SDQL-result-[result_offset++]")
 	show_next_to_key = null
 	if(qdel_on_finish)
 		qdel(src)

code/modules/admin/verbs/adminhelp.dm

@@ -590,6 +590,7 @@ GLOBAL_DATUM_INIT(ahelp_tickets, /datum/admin_help_tickets, new)
 			if (related_ticket.id == id)
 				continue
 			dat += "[related_ticket.TicketHref("#[related_ticket.id]")] ([related_ticket.ticket_status()]): [related_ticket.name]<br/>"
+	dat += "</html>"
 
 	usr << browse(dat.Join(), "window=ahelp[id];size=750x480")
 

code/modules/admin/verbs/getlogs.dm

@@ -15,7 +15,7 @@ ADMIN_VERB(get_current_logs, R_ADMIN, "Get Current Logs", "View or retrieve logf
 	message_admins("[key_name_admin(src)] accessed file: [path]")
 	switch(tgui_alert(usr,"View (in game), Open (in your system's text editor), or Download?", path, list("View", "Open", "Download")))
 		if ("View")
-			src << browse("<pre style='word-wrap: break-word;'>[html_encode(file2text(file(path)))]</pre>", list2params(list("window" = "viewfile.[path]")))
+			src << browse(HTML_SKELETON("<pre style='word-wrap: break-word;'>[html_encode(file2text(file(path)))]</pre>"), list2params(list("window" = "viewfile.[path]")))
 		if ("Open")
 			src << run(file(path))
 		if ("Download")

code/modules/admin/verbs/mapping.dm

@@ -61,7 +61,7 @@ ADMIN_VERB(sec_camera_report, R_DEBUG, "Camera Report", "Get a printout of all c
 					output += "<li><font color='red'>Camera not connected to wall at [ADMIN_VERBOSEJMP(C1)] Network: [json_encode(C1.network)]</font></li>"
 
 	output += "</ul>"
-	user << browse(output,"window=airreport;size=1000x500")
+	user << browse(HTML_SKELETON(output),"window=airreport;size=1000x500")
 	BLACKBOX_LOG_ADMIN_VERB("Show Camera Report")
 
 ADMIN_VERB_VISIBILITY(intercom_view, ADMIN_VERB_VISIBLITY_FLAG_MAPPING_DEBUG)
@@ -86,7 +86,7 @@ ADMIN_VERB(show_map_reports, R_DEBUG, "Show Map Reports", "Displays a list of ma
 	for(var/datum/map_report/report as anything in GLOB.map_reports)
 		dat += "[report.tag] ([report.original_path]) - <a href='byond://?src=[REF(report)];[HrefToken()];show=1'>View</a><br>"
 
-	user << browse(dat, "window=map_reports")
+	user << browse(HTML_SKELETON(dat), "window=map_reports")
 
 ADMIN_VERB_VISIBILITY(cmd_show_at_list, ADMIN_VERB_VISIBLITY_FLAG_MAPPING_DEBUG)
 ADMIN_VERB(cmd_show_at_list, R_DEBUG, "Show roundstart AT list", "Displays a list of active turfs coordinates at roundstart.", ADMIN_CATEGORY_MAPPING)
@@ -98,7 +98,7 @@ ADMIN_VERB(cmd_show_at_list, R_DEBUG, "Show roundstart AT list", "Displays a lis
 		dat += "[ADMIN_VERBOSEJMP(T)]\n"
 		dat += "<br>"
 
-	user << browse(dat, "window=at_list")
+	user << browse(HTML_SKELETON(dat), "window=at_list")
 
 	BLACKBOX_LOG_ADMIN_VERB("Show Roundstart Active Turfs")