fix: do not mutate data return by useSuspenseData when csr

[ClarkXia]

Do not mutate data return by useSuspenseData when csr, otherwise it may cause mulit time render in nested withSuspense.

[codecov-commenter]

Codecov Report

Patch coverage: 13.55% and project coverage change: -0.10% ⚠️

Comparison is base (e40a7cb) 80.36% compared to head (bd27696) 80.26%.
Report is 1 commits behind head on release/next.

Additional details and impacted files

@@               Coverage Diff                @@
##           release/next    #6434      +/-   ##
================================================
- Coverage         80.36%   80.26%   -0.10%     
================================================
  Files               237      237              
  Lines             21454    21490      +36     
  Branches           2650     2650              
================================================
+ Hits              17242    17250       +8     
- Misses             4168     4196      +28     
  Partials             44       44              

Files Changed	Coverage Δ
packages/runtime/src/Suspense.tsx	28.39% <13.55%> (-1.77%)	⬇️

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