[fix](cloud) Fix missing disk and cpu report in cloud mode

[gavinchou]

Missing CPU reports may result in an incorrect PipelineExecutorSize (fixed to 1), affecting execution performance.

Reference code path of FE

getMinPipelineExecutorSize -> Backend.getPipelineExecutorSize 
public boolean updateCpuInfo(int cpuCores, int pipelineExecutorSize)
private static void cpuReport(long backendId, int cpuCores, int pipelineExecutorSize)

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[dataroaring]

LGTM

[github-actions]

PR approved by at least one committer and no changes requested.

[gavinchou]

run buildall

[github-actions]

PR approved by anyone and no changes requested.

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[deardeng]

LGTM

[doris-robot]

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