Fix race condition in random engine

[ray6080]

Description

pcg() is not thread safe. Fixed by locking for now.

The ideal way to fix this is to let each function holds its own local state, which holds a RandomEngine with a unique seed. This would require changes to ExpressionEvaluator and function interface, which is non-trivial. See issue #4828

[github-actions]

Benchmark Result

Master commit hash: 63f86462016b6628c65f7572b5920b3f3d2c88d6
Branch commit hash: de3208d30bee308a5bd59b300175b50d548b448b

Query Group	Query Name	Mean Time - Commit (ms)	Mean Time - Master (ms)	Diff
aggregation	q24	682.65	687.12	-4.48 (-0.65%)
aggregation	q28	6082.88	6145.00	-62.12 (-1.01%)
filter	q14	117.85	126.90	-9.06 (-7.14%)
filter	q15	117.35	128.04	-10.69 (-8.35%)
filter	q16	299.23	305.87	-6.63 (-2.17%)
filter	q17	439.58	445.82	-6.24 (-1.40%)
filter	q18	1905.31	2002.36	-97.06 (-4.85%)
filter	zonemap-node	80.47	91.12	-10.65 (-11.68%)
filter	zonemap-node-lhs-cast	81.18	89.28	-8.10 (-9.08%)
filter	zonemap-node-null	80.71	88.93	-8.22 (-9.24%)
filter	zonemap-rel	5736.08	5661.52	74.57 (1.32%)
fixed_size_expr_evaluator	q07	565.22	572.63	-7.41 (-1.29%)
fixed_size_expr_evaluator	q08	794.59	805.96	-11.38 (-1.41%)
fixed_size_expr_evaluator	q09	797.10	808.44	-11.35 (-1.40%)
fixed_size_expr_evaluator	q10	230.77	239.42	-8.65 (-3.61%)
fixed_size_expr_evaluator	q11	223.24	231.73	-8.48 (-3.66%)
fixed_size_expr_evaluator	q12	218.99	227.25	-8.26 (-3.64%)
fixed_size_expr_evaluator	q13	1468.49	1456.06	12.43 (0.85%)
fixed_size_seq_scan	q23	103.41	118.76	-15.35 (-12.92%)
join	q29	649.25	599.16	50.09 (8.36%)
join	q30	10128.63	10525.18	-396.55 (-3.77%)
join	q31	5.60	5.15	0.45 (8.73%)
join	SelectiveTwoHopJoin	49.23	50.08	-0.85 (-1.70%)
ldbc_snb_ic	q35	2515.21	2550.01	-34.80 (-1.36%)
ldbc_snb_ic	q36	467.43	521.21	-53.78 (-10.32%)
ldbc_snb_is	q32	6.28	6.30	-0.02 (-0.26%)
ldbc_snb_is	q33	11.92	16.07	-4.16 (-25.87%)
ldbc_snb_is	q34	1.40	1.52	-0.12 (-7.74%)
multi-rel	multi-rel-large-scan	1322.12	1403.38	-81.25 (-5.79%)
multi-rel	multi-rel-lookup	26.74	5.77	20.97 (363.36%)
multi-rel	multi-rel-small-scan	99.97	97.01	2.97 (3.06%)
order_by	q25	122.14	133.23	-11.09 (-8.32%)
order_by	q26	450.67	463.69	-13.03 (-2.81%)
order_by	q27	1443.40	1490.41	-47.00 (-3.15%)
recursive_join	recursive-join-bidirection	308.78	307.66	1.12 (0.36%)
recursive_join	recursive-join-dense	7352.31	7316.28	36.03 (0.49%)
recursive_join	recursive-join-path	23496.87	23719.29	-222.42 (-0.94%)
recursive_join	recursive-join-sparse	1058.75	1060.40	-1.65 (-0.16%)
recursive_join	recursive-join-trail	7340.80	7292.91	47.89 (0.66%)
scan_after_filter	q01	165.56	172.35	-6.79 (-3.94%)
scan_after_filter	q02	148.49	157.00	-8.51 (-5.42%)
shortest_path_ldbc100	q37	82.15	97.48	-15.34 (-15.73%)
shortest_path_ldbc100	q38	368.98	380.84	-11.86 (-3.12%)
shortest_path_ldbc100	q39	63.16	51.04	12.12 (23.74%)
shortest_path_ldbc100	q40	458.20	386.09	72.11 (18.68%)
var_size_expr_evaluator	q03	2049.56	2058.68	-9.11 (-0.44%)
var_size_expr_evaluator	q04	2180.71	2233.61	-52.90 (-2.37%)
var_size_expr_evaluator	q05	2635.23	2653.37	-18.13 (-0.68%)
var_size_expr_evaluator	q06	1315.85	1359.95	-44.10 (-3.24%)
var_size_seq_scan	q19	1427.68	1443.57	-15.89 (-1.10%)
var_size_seq_scan	q20	2656.67	2589.86	66.81 (2.58%)
var_size_seq_scan	q21	2262.73	2281.48	-18.75 (-0.82%)
var_size_seq_scan	q22	123.49	127.14	-3.65 (-2.87%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.40%. Comparing base (69c6456) to head (b651d9d).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4827      +/-   ##
==========================================
+ Coverage   86.39%   86.40%   +0.01%     
==========================================
  Files        1399     1399              
  Lines       60434    60436       +2     
  Branches     7445     7443       -2     
==========================================
+ Hits        52209    52218       +9     
+ Misses       8059     8052       -7     
  Partials      166      166              

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