[bug] hashmap-to_string_ref

[Mryange]

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[Thearas]

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?

[Mryange]

run buildall

[doris-robot]

TPC-H: Total hot run time: 27551 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit cbdcffc7575ad2cddadebb2cdf7ba1d3466602fd, data reload: false

------ Round 1 ----------------------------------
============================================
q1	17637	4448	4275	4275
q2	q3	10652	763	511	511
q4	4671	370	249	249
q5	7551	1181	1018	1018
q6	171	179	147	147
q7	769	820	673	673
q8	9290	1451	1293	1293
q9	4875	4755	4697	4697
q10	6323	1886	1652	1652
q11	466	268	247	247
q12	751	562	468	468
q13	18042	2959	2159	2159
q14	232	235	227	227
q15	947	786	803	786
q16	776	724	676	676
q17	714	850	409	409
q18	6306	5440	5301	5301
q19	1150	981	618	618
q20	492	506	399	399
q21	4461	2135	1480	1480
q22	414	340	266	266
Total cold run time: 96690 ms
Total hot run time: 27551 ms

----- Round 2, with runtime_filter_mode=off -----
============================================
q1	4635	4548	4512	4512
q2	q3	3940	4375	3925	3925
q4	857	1207	788	788
q5	4058	4341	4346	4341
q6	182	171	136	136
q7	1784	1671	1604	1604
q8	2489	2760	2609	2609
q9	7548	7485	7496	7485
q10	3745	3953	3591	3591
q11	490	430	411	411
q12	489	598	451	451
q13	2836	3119	2354	2354
q14	285	304	282	282
q15	854	824	798	798
q16	705	798	915	798
q17	1169	1438	1375	1375
q18	7299	6844	6676	6676
q19	914	875	877	875
q20	2063	2126	2017	2017
q21	4010	3450	3434	3434
q22	490	432	380	380
Total cold run time: 50842 ms
Total hot run time: 48842 ms

[doris-robot]

TPC-DS: Total hot run time: 153436 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit cbdcffc7575ad2cddadebb2cdf7ba1d3466602fd, data reload: false

query5	4336	638	531	531
query6	324	224	207	207
query7	4239	483	270	270
query8	334	238	232	232
query9	8702	2758	2726	2726
query10	503	395	336	336
query11	7458	5808	5641	5641
query12	187	129	126	126
query13	1258	458	350	350
query14	5738	3853	3547	3547
query14_1	2844	2829	2812	2812
query15	207	202	174	174
query16	1011	479	458	458
query17	1102	726	617	617
query18	2445	444	353	353
query19	224	210	187	187
query20	138	131	130	130
query21	232	148	128	128
query22	4739	4911	4735	4735
query23	15996	15573	15371	15371
query23_1	15506	16412	15985	15985
query24	7770	1684	1296	1296
query24_1	1340	1299	1312	1299
query25	589	558	471	471
query26	1645	282	184	184
query27	3019	494	304	304
query28	5110	1988	1960	1960
query29	898	688	514	514
query30	321	258	217	217
query31	1466	1401	1337	1337
query32	102	77	72	72
query33	511	344	288	288
query34	923	930	578	578
query35	639	680	603	603
query36	1083	1126	968	968
query37	133	94	85	85
query38	2955	2912	2875	2875
query39	876	865	842	842
query39_1	813	827	808	808
query40	230	148	144	144
query41	64	58	60	58
query42	308	301	298	298
query43	254	250	223	223
query44	
query45	206	187	185	185
query46	886	991	616	616
query47	2085	2100	1995	1995
query48	300	316	229	229
query49	688	471	381	381
query50	701	295	220	220
query51	4152	4133	4108	4108
query52	294	291	279	279
query53	287	331	283	283
query54	305	269	262	262
query55	95	84	85	84
query56	344	329	311	311
query57	1387	1326	1284	1284
query58	284	279	281	279
query59	1326	1495	1250	1250
query60	338	340	317	317
query61	151	141	140	140
query62	627	603	544	544
query63	311	281	275	275
query64	4999	1259	1017	1017
query65	
query66	1458	460	364	364
query67	16293	16474	16380	16380
query68	
query69	395	299	293	293
query70	969	929	955	929
query71	352	312	306	306
query72	2877	2666	2448	2448
query73	555	560	325	325
query74	10048	9927	9822	9822
query75	2869	2751	2463	2463
query76	2274	1045	679	679
query77	368	392	338	338
query78	11279	11314	10711	10711
query79	2650	765	606	606
query80	1753	628	548	548
query81	568	279	245	245
query82	1010	155	122	122
query83	328	266	249	249
query84	259	114	100	100
query85	898	491	433	433
query86	426	309	292	292
query87	3156	3084	2976	2976
query88	3607	2664	2662	2662
query89	431	367	341	341
query90	2012	188	183	183
query91	162	157	136	136
query92	78	79	74	74
query93	1131	859	518	518
query94	639	337	279	279
query95	593	391	314	314
query96	651	530	229	229
query97	2471	2522	2407	2407
query98	233	223	218	218
query99	1008	984	914	914
Total cold run time: 237194 ms
Total hot run time: 153436 ms