Simplify and Fix server task queue

[6543]

taken from #6011

go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:62:		NewMemoryQueue			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:77:		PushAtOnce			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:87:		Poll				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:114:		Done				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:119:		Error				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:125:		ErrorAtOnce			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:133:		finished			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:160:		Wait				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:175:		Extend				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:192:		Info				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:218:		Pause				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:225:		Resume				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:232:		KickAgentWorkers		100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:246:		process				100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:278:		filterWaiting			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:303:		assignToWorker			100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:327:		resubmitExpiredPipelines	100.0%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:339:		depsInQueue			90.9%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:359:		updateDepStatusInQueue		78.6%
go.woodpecker-ci.org/woodpecker/v3/server/queue/fifo.go:388:		removeFromPendingAndWaiting	100.0%

[codecov]

Codecov Report

❌ Patch coverage is 78.00000% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 21.99%. Comparing base (f202470) to head (70716d3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
server/pipeline/cancel.go	0.00%	10 Missing ⚠️
server/queue/fifo.go	97.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6017      +/-   ##
==========================================
+ Coverage   21.87%   21.99%   +0.12%     
==========================================
  Files         432      432              
  Lines       39258    39200      -58     
==========================================
+ Hits         8586     8621      +35     
+ Misses      29864    29771      -93     
  Partials      808      808              

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[lafriks]

Lint failures

[6543]

on it