Numerous FPs when `Literal['abc']` and var named `abc` coexist (but only if `enableExperimentalFeatures=true`)

**Describe the bug**
I haven't been able to narrow down _exactly_ what triggers the issue, but it relates to a variable having a name identical to the value of a `Literal` type.

**Code or Screenshots**
Code sample in [pyright playground](https://pyright-play.net/?strict=true&code=MQAgDgngTglg5gCwC4C4QGcmwMZIFCiSyKogCmAdgIYBGANmQKIAeYZsAtpUlXQGJkqSAK5Qy6ALxZhZPADMoAew4gA%2BqrnCRY9SBgcwiqEhBUKFRTyQxFFdPKUqkEMDApw9BoyYAyMJOy8eHjoymSqACYwuGhRuADabkgANCB%2BAVC88QDktmTZqdlIAO6K2QC65SASIADeAL4hYapwlKpkrFDVIAAUeCADgwMwIHJGvTCpHIoRZACUehQYzXFIAHT%2BZBzoPXP9Q4MwciDTs9U1uRT5%2Bwcge2NdeYvLxmQRPaFckdFIcyg3am6MHeeTmQA)

```python
# pyright: strict
# pyright: enableExperimentalFeatures=true
from __future__ import annotations
from typing import Literal

some_dict: dict[int, Literal['one', 'two']] = {}
some_gen_expr = (
i for (i, mode) in some_dict.items()
if mode == 'one'
)
for one in sorted(some_dict):
_ = id(one)

```

**Output:**

**Expected:** No output.

**Note:** No errors occur (expected behaviour) if the variable `one` is renamed (change `one` to `half_of_two` on the last two lines).

**Actual output:**
```
$ pyright -p /dev/null bug.py | sed -e "s@$PWD@...@g"
.../bug.py
.../bug.py:7:1 - error: Type of "some_gen_expr" is partially unknown
  Type of "some_gen_expr" is "Generator[Unknown, None, None]" (reportUnknownVariableType)
.../bug.py:8:16 - error: Type of "i" is unknown (reportUnknownVariableType)
.../bug.py:8:19 - error: Type of "mode" is unknown (reportUnknownVariableType)
.../bug.py:11:5 - error: Type of "one" is unknown (reportUnknownVariableType)
.../bug.py:11:19 - error: Argument type is partially unknown
  Argument corresponds to parameter "iterable" in function "sorted"
  Argument type is "dict[Unknown, Unknown]" (reportUnknownArgumentType)
.../bug.py:12:12 - error: Argument type is unknown
  Argument corresponds to parameter "obj" in function "id" (reportUnknownArgumentType)
6 errors, 0 warnings, 0 informations
```

**VS Code extension or command-line**

Verified with vim-lsp and command-line:

```
$ pyright --version
pyright 1.1.405
```

Reproduce the provided Python sample with pyright 1.1.405 and enableExperimentalFeatures=true, using the linked playground or the shown command; compare it with the renamed-variable case. Trace the diagnostic path for the generator and Literal handling, then verify that the sample produces no output without unrelated diagnostics.

Written by the indexing model from the issue text.