Issue Description

i created a passenger.entity.ts file added few fields over it.
Then i generated a migration named first and i run migration run command successfully and then i can feel changes to my PostgreSQL database,

after few minutes, again i generated a migration named second,

here i am surprised to see that the second migration even generate the same SQL query as of first migrations.

Expected Behavior

i believe when i run command to generated second migration, it should show "typeORM No changes in database schema were found - cannot generate a migration. To create a new empty migration use “typeorm migration:create” command "

Actual Behavior

when i run first migration, following code is generated:

import {MigrationInterface, QueryRunner} from "typeorm";

export class first1627232991461 implements MigrationInterface {
    name = 'first1627232991461'

    public async up(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(`ALTER TABLE "passengers" ALTER COLUMN "is_deleted" SET DEFAULT 'false'`);
    }

    public async down(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(`ALTER TABLE "passengers" ALTER COLUMN "is_deleted" SET DEFAULT false`);
    }

}

when i run second migration command, following code is genetated:

import {MigrationInterface, QueryRunner} from "typeorm";

export class second1627234626276 implements MigrationInterface {
    name = 'second1627234626276'

    public async up(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(`ALTER TABLE "passengers" ALTER COLUMN "is_deleted" SET DEFAULT 'false'`);
    }

    public async down(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(`ALTER TABLE "passengers" ALTER COLUMN "is_deleted" SET DEFAULT false`);
    }

}

Surprisingly in both case there is same sql query

Steps to Reproduce

name of my column is inside .entity.ts file is:

@Column({ name: 'is_deleted', type: 'boolean', default: 'false' })
public isDeleted: boolean;

My Environment

Additional Context

i believe following image clearly show this issue

Relevant Database Driver(s)

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• ✖️ No, I don’t have the time and I’m okay to wait for the community / maintainers to resolve this issue.