[Runtime] Fix checkpoint causing empty results in PipelineServiceExecutorContext (#543)

[huhao0926]

• fix checkpoint causing empty results in interactive query
• skip checkpoint when context is PipelineServiceExecutorContext

What changes were proposed in this pull request?

How was this PR tested?

• Production environment verified
  refer to [CheckpointSchedulerContext] cycle cache results in empty query results #543
  Create a graph query type task with the graph name 'dy_modern' selected,

STEP1:
start the task and execute following gql:
"""
MATCH (a:person) -[e ]->(b)
Let a.out_cnt = COUNT((b) ->(c) => c),
Let b.out_weight = SUM((b) -[e1]-> (c) => e1.weight)
RETURN a,e,b
"""
You can see that the query results is not empty

STEP2:
execute
"""
WITH p AS (
SELECT * FROM (VALUES(1, 0.4), (4, 0.5)) AS t(id, weight)
)
MATCH (a:person where a.id = p.id) -[e where weight < p.weight + 0.1]->(b)
Let a.out_cnt = COUNT((b) ->(c) => c),
Let b.out_weight = SUM((b) -[e1]-> (c) => e1.weight)
RETURN a,e,b
"""
You can also see that the query results is not empty

STEP3:
execute gsql the same as step1 or step2
"""
MATCH (a:person) -[e ]->(b)
Let a.out_cnt = COUNT((b) ->(c) => c),
Let b.out_weight = SUM((b) -[e1]-> (c) => e1.weight)
RETURN a,e,b
"""
Before：
the results is empty

After integrating repair PR：
consistent with the previous query results

[CLAassistant]

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[huhao0926]

All committers have signed the CLA.

I have agreed to the CLA for TuGraph-family/tugraph-analytics

[cbqiao]

LGTM

[Loognqiang]

LGTM