[pdata] Fix Value.asRaw to correctly return Slice and Map elements

[dmitryax]

return statements were missed in the Value.asRaw function for Slice and Map elements.

[codecov]

Codecov Report

Merging #5153 (6af1ec7) into main (f6b1cd9) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #5153      +/-   ##
==========================================
+ Coverage   90.30%   90.38%   +0.07%     
==========================================
  Files         182      182              
  Lines       11031    11031              
==========================================
+ Hits         9962     9970       +8     
+ Misses        843      836       -7     
+ Partials      226      225       -1     

Impacted Files	Coverage Δ
model/internal/pdata/common.go	94.98% <100.00%> (+1.43%)	⬆️

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