String extract index out of range

[acquamarin]

1. If the string extract index is out of range, we are outputing the last character in the string.
   Example:
   GF:

graphflowdb> match (o:org1) return "text"[100]
>> Number of output tuples: 1
>> Compiling time: 0.47ms
>> Executing time: 0.72ms
-----
| t |
-----

DUCKDB:

D select 'text'[20];
┌────────────┐
│ 'text'[20] │
├────────────┤
│            │
└────────────┘

We should also output nothing if the index is out of range

2. If the left index is a negative number and out of range or 0, we are outputing the entire string, however duckdb outputs nothing.
   Example:
   GF:

graphflowdb> match (o:org1) retURN left("123", -5)
>> Number of output tuples: 4
>> Compiling time: 0.90ms
>> Executing time: 0.61ms
-------
| 123 |
-------

DUCKDB:

D select left('123', -5);
┌─────────────────┐
│ left('123', -5) │
├─────────────────┤
│                 │
└─────────────────┘

3. lpad: If the length is a negative number, the lpad will cause an assertion error:

graphflowdb> match (o:org1) retURN lpad("123", -100, ">")
graphflowdb: src/common/in_mem_overflow_buffer.cpp:7: uint8_t* graphflow::common::InMemOverflowBuffer::allocateSpace(uint64_t): Assertion `size <= LARGE_PAGE_SIZE' failed.
Aborted (core dumped)

Duckdb:

D select lpad('123', -100, '>');
┌────────────────────────┐
│ lpad('123', -100, '>') │
├────────────────────────┤
│                        │
└────────────────────────┘