[Delta] fix and refine Delta UTs

[YannByron]

What changes were proposed in this pull request?

(Please fill in changes proposed in this fix)

(Fixes: #ISSUE-ID)

How was this patch tested?

(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)

(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

[github-actions]

Thanks for opening a pull request!

Could you open an issue for this pull request on Github Issues?

https://github.com/oap-project/gluten/issues

Then could you also rename commit message and pull request title in the following format?

[GLUTEN-${ISSUES_ID}][COMPONENT]feat/fix: ${detailed message}

See also:

• Other pull requests

[github-actions]

Run Gluten Clickhouse CI

[github-actions]

Run Gluten Clickhouse CI

[github-actions]

Run Gluten Clickhouse CI

[github-actions]

Run Gluten Clickhouse CI

[yma11]

Run Gluten Clickhouse CI

[GlutenPerfBot]

===== Performance report for TPCH SF2000 with Velox backend, for reference only ====

query	log/native_3955_time.csv	log/native_master_12_17_2023_7b60154bb_time.csv	difference	percentage
q1	35.81	34.91	-0.896	97.50%
q2	25.03	25.03	-0.005	99.98%
q3	37.12	35.97	-1.153	96.90%
q4	38.93	39.37	0.438	101.12%
q5	72.47	73.14	0.665	100.92%
q6	5.44	8.18	2.742	150.37%
q7	87.19	88.35	1.164	101.33%
q8	86.25	84.51	-1.739	97.98%
q9	127.68	125.66	-2.021	98.42%
q10	46.21	45.80	-0.416	99.10%
q11	20.73	20.41	-0.323	98.44%
q12	26.04	25.88	-0.157	99.40%
q13	46.67	45.14	-1.528	96.73%
q14	17.05	18.64	1.593	109.34%
q15	29.32	28.80	-0.513	98.25%
q16	15.64	15.77	0.127	100.81%
q17	103.07	103.95	0.883	100.86%
q18	150.89	149.25	-1.636	98.92%
q19	12.82	12.63	-0.190	98.52%
q20	27.20	27.47	0.272	101.00%
q21	228.17	227.96	-0.217	99.90%
q22	13.98	14.17	0.191	101.37%
total	1253.72	1251.01	-2.718	99.78%