fix: Compare config value then swap when caching param value

[congqixia]

See also #33784

This PR change the behavior of SetCacheValue of config manager:

• Use mutex and map instead of concurrent map for configCache
• Compare config raw value before set cache value

With this implementation, concurrent caching & eviction shall always have current output:

time	caching	eviction	config	cached
t0	get		old value	null
t1	CAS OK		old value	old value
t2		update	new value	old value
t3		eviction	new value	null

time	caching	eviction	config	cached
t0	get		old value	null
t1		update	new value	null
t2	CAS fail		old value	null
t3		eviction	new value	null

time	caching	eviction	config	cached
t0		update	new value	null
t1	get		new value	null
t2	CAS OK		new value	new value
t3		eviction	new value	null

time	caching	eviction	config	cached
t0		update	new value	null
t1	get		new value	null
t2		eviction	new value	null
t3	CAS OK		new value	new value

time	caching	eviction	config	cached
t0		update	new value	null
t1		eviction	new value	null
t2	get		new value	null
t3	CAS OK		new value	new value

[sre-ci-robot]

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[aoiasd]

/lgtm

[codecov]

Codecov Report

Attention: Patch coverage is 94.64286% with 3 lines in your changes missing coverage. Please review.

Project coverage is 80.95%. Comparing base (f7af323) to head (4a41749).
Report is 10 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #33785   +/-   ##
=======================================
  Coverage   80.94%   80.95%           
=======================================
  Files        1058     1058           
  Lines      135119   135200   +81     
=======================================
+ Hits       109377   109446   +69     
- Misses      21555    21575   +20     
+ Partials     4187     4179    -8     

Files	Coverage Δ
pkg/config/manager.go	86.05% <100.00%> (+1.53%)	⬆️
pkg/util/paramtable/param_item.go	87.01% <90.90%> (+0.21%)	⬆️

... and 31 files with indirect coverage changes